[Bug]: Nextcloud Desktop crash when trying to remove account

[tranlequanghung52]

⚠️ Before submitting, please verify the following: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server and Desktop Client are up to date. See Server Maintenance and Release Schedule and Desktop Releases for supported versions.
• I agree to follow Nextcloud's Code of Conduct

Bug description

When I was trying to remove account, the prompt display very quickly and then close, and Nextcloud also crashed (no longer appear on the bar and also running processes)

Steps to reproduce

1. Run Nextcloud
2. Open main dialog
3. Click on the arrow next to the account
4. Click on "..." and then click "remove account"
5. The prompt still displays, but disappear and crash very quickly

Expected behavior

The prompt remain on the screen and user should be able to click "Remove account"

Which files are affected by this bug

None

Operating system

Linux

Which version of the operating system you are running.

Ubuntu 24.04LTS

Package

Official Linux AppImage

Nextcloud Server version

29.0.5

Nextcloud Desktop Client version

3.14.0

Is this bug present after an update or on a fresh install?

Fresh desktop client install

Are you using the Nextcloud Server Encryption module?

Encryption is Enabled

Are you using an external user-backend?

• Default internal user-backend
• LDAP/ Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

No response

Additional info

lognextcloud.zip

[mgallien]

I confirm

[ericlap34]

I also confirm issue.
Ubuntu 24.04 LTS, Gnome, Nextcloud client 3.14.0 installed from nextcloud-devs ppa.
Same client on Ubuntu 22.04 does not crash.

Is there a workaround to remove the account by editing some files? For example, would deleting .config/Nextcloud and .cache/Nextcloud reset everything?

Thanks.

edit: Yes, deleting .config/Nextcloud and .cache/Nextcloud (after having quit the client) does reset the client, and you can start fresh and re-create the desired accounts from there.

[Integral-Tech]

I can confirm.
Here is my stack trace:

           PID: 21866 (nextcloud)
           UID: 1000 (integral)
           GID: 1000 (integral)
        Signal: 11 (SEGV)
     Timestamp: Fri 2024-09-27 12:45:29 CST (12s ago)
  Command Line: /usr/bin/nextcloud
    Executable: /usr/bin/nextcloud
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-com.nextcloud.desktopclient.nextcloud@90e6589350024a769ff001e516fcaf0a.service
          Unit: user@1000.service
     User Unit: app-com.nextcloud.desktopclient.nextcloud@90e6589350024a769ff001e516fcaf0a.service
         Slice: user-1000.slice
     Owner UID: 1000 (integral)
       Boot ID: 148a77c82c674bfa9d1274baa4138c44
    Machine ID: 9198c1294915462dbd97a59ed65ea921
      Hostname: IntegralPC
       Storage: /var/lib/systemd/coredump/core.nextcloud.1000.148a77c82c674bfa9d1274baa4138c44.21866.1727412329000000.zst (present)
  Size on Disk: 14.5M
       Message: Process 21866 (nextcloud) of user 1000 dumped core.
                
                Stack trace of thread 21866:
                #0  0x00007de528544c47 g_action_map_lookup_action (libgio-2.0.so.0 + 0xd8c47)
                #1  0x0000601f51a1b19d n/a (nextcloud + 0x21919d)
                #2  0x00007de527fa3397 n/a (libQt6Core.so.6 + 0x1a3397)
                #3  0x0000601f519574c1 n/a (nextcloud + 0x1554c1)
                #4  0x0000601f51965fa9 n/a (nextcloud + 0x163fa9)
                #5  0x0000601f51957d3e n/a (nextcloud + 0x155d3e)
                #6  0x00007de527fa3397 n/a (libQt6Core.so.6 + 0x1a3397)
                #7  0x0000601f519285bf n/a (nextcloud + 0x1265bf)
                #8  0x0000601f51a47680 n/a (nextcloud + 0x245680)
                #9  0x0000601f51a47a4f n/a (nextcloud + 0x245a4f)
                #10 0x00007de528af0a8b n/a (libQt6Qml.so.6 + 0x2f0a8b)
                #11 0x00007de5289cd15e n/a (libQt6Qml.so.6 + 0x1cd15e)
                #12 0x00007de5289cfe29 _ZNK3QV413QObjectMethod12callInternalEPKNS_5ValueES3_i (libQt6Qml.so.6 + 0x1cfe29)
                #13 0x00007de528a195fa n/a (libQt6Qml.so.6 + 0x2195fa)
                #14 0x00007de528a1d353 n/a (libQt6Qml.so.6 + 0x21d353)
                #15 0x00007de528984ab6 n/a (libQt6Qml.so.6 + 0x184ab6)
                #16 0x00007de528987c51 _ZN3QV48Function4callEP7QObjectPPvPK9QMetaTypeiPNS_16ExecutionContextE (libQt6Qml.so.6 + 0x187c51)
                #17 0x00007de528abafc4 _ZN24QQmlJavaScriptExpression8evaluateEPPvPK9QMetaTypei (libQt6Qml.so.6 + 0x2bafc4)
                #18 0x00007de528a651a3 _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt6Qml.so.6 + 0x2651a3)
                #19 0x00007de528a6a0bf n/a (libQt6Qml.so.6 + 0x26a0bf)
                #20 0x00007de528adba4c _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt6Qml.so.6 + 0x2dba4c)
                #21 0x00007de527fa30ea n/a (libQt6Core.so.6 + 0x1a30ea)
                #22 0x00007de5274adb3a _ZN27QQuickAbstractButtonPrivate13handleReleaseERK7QPointFm (libQt6QuickTemplates2.so.6 + 0xadb3a)
                #23 0x00007de5274c8b90 _ZN13QQuickControl17mouseReleaseEventEP11QMouseEvent (libQt6QuickTemplates2.so.6 + 0xc8b90)
                #24 0x00007de529997785 _ZN17QQuickItemPrivate19deliverPointerEventEP6QEvent (libQt6Quick.so.6 + 0x197785)
                #25 0x00007de529997a0b _ZN10QQuickItem5eventEP6QEvent (libQt6Quick.so.6 + 0x197a0b)
                #26 0x00007de5344fc8cc _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0xfc8cc)
                #27 0x00007de527f45aa8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x145aa8)
                #28 0x00007de529b4c910 _ZN26QQuickDeliveryAgentPrivate27deliverMatchingPointsToItemEP10QQuickItembP13QPointerEventb (libQt6Quick.so.6 + 0x34c910)
                #29 0x00007de529b4cfc2 _ZN26QQuickDeliveryAgentPrivate20deliverUpdatedPointsEP13QPointerEvent (libQt6Quick.so.6 + 0x34cfc2)
                #30 0x00007de529b4ebd3 _ZN26QQuickDeliveryAgentPrivate19deliverPointerEventEP13QPointerEvent (libQt6Quick.so.6 + 0x34ebd3)
                #31 0x00007de529b4fcc5 _ZN26QQuickDeliveryAgentPrivate16handleMouseEventEP11QMouseEvent (libQt6Quick.so.6 + 0x34fcc5)
                #32 0x00007de529b50453 _ZN19QQuickDeliveryAgent5eventEP6QEvent (libQt6Quick.so.6 + 0x350453)
                #33 0x00007de529a4df28 _ZN12QQuickWindow5eventEP6QEvent (libQt6Quick.so.6 + 0x24df28)
                #34 0x00007de5344fc8cc _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0xfc8cc)
                #35 0x00007de527f45aa8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x145aa8)
                #36 0x00007de528f78140 _ZN22QGuiApplicationPrivate17processMouseEventEPN29QWindowSystemInterfacePrivate10MouseEventE (libQt6Gui.so.6 + 0x178140)
                #37 0x00007de528fe7724 _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Gui.so.6 + 0x1e7724)
                #38 0x00007de5294041e4 n/a (libQt6Gui.so.6 + 0x6041e4)
                #39 0x00007de529f0d559 n/a (libglib-2.0.so.0 + 0x5d559)
                #40 0x00007de529f70157 n/a (libglib-2.0.so.0 + 0xc0157)
                #41 0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #42 0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #43 0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #44 0x00007de527f4a11d _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x14a11d)
                #45 0x0000601f518c1ee7 n/a (nextcloud + 0xbfee7)
                #46 0x00007de527834e08 n/a (libc.so.6 + 0x25e08)
                #47 0x00007de527834ecc __libc_start_main (libc.so.6 + 0x25ecc)
                #48 0x0000601f51922e25 n/a (nextcloud + 0x120e25)
                
                Stack trace of thread 21871:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21868:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5280d1c60 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1c60)
                #3  0x00007de5276a41ef n/a (libQt6WaylandClient.so.6 + 0x601ef)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21870:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21876:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21877:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28075:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28073:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21884:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d7a0 _ZN7QThread3runEv (libQt6Core.so.6 + 0x23d7a0)
                #6  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #7  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #8  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21887:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de529f0cab2 n/a (libglib-2.0.so.0 + 0x5cab2)
                #4  0x00007de529f41026 n/a (libglib-2.0.so.0 + 0x91026)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21879:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21869:
                #0  0x00007de52791a63d __poll (libc.so.6 + 0x10b63d)
                #1  0x00007de5276a4257 n/a (libQt6WaylandClient.so.6 + 0x60257)
                #2  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #3  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #4  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28082:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5280d1c60 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1c60)
                #3  0x00007de529c19f3a n/a (libQt6Quick.so.6 + 0x419f3a)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21885:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d7a0 _ZN7QThread3runEv (libQt6Core.so.6 + 0x23d7a0)
                #6  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #7  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #8  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21886:
                #0  0x00007de5279261fd syscall (libc.so.6 + 0x1171fd)
                #1  0x00007de529f3ef20 g_cond_wait (libglib-2.0.so.0 + 0x8ef20)
                #2  0x00007de529ed598c n/a (libglib-2.0.so.0 + 0x2598c)
                #3  0x00007de529f45137 n/a (libglib-2.0.so.0 + 0x95137)
                #4  0x00007de529f41026 n/a (libglib-2.0.so.0 + 0x91026)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28083:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21889:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0e287 g_main_loop_run (libglib-2.0.so.0 + 0x5e287)
                #3  0x00007de52857fb44 n/a (libgio-2.0.so.0 + 0x113b44)
                #4  0x00007de529f41026 n/a (libglib-2.0.so.0 + 0x91026)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28070:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21878:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28072:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 27532:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d7a0 _ZN7QThread3runEv (libQt6Core.so.6 + 0x23d7a0)
                #6  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #7  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #8  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21895:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d7a0 _ZN7QThread3runEv (libQt6Core.so.6 + 0x23d7a0)
                #6  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #7  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #8  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28076:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 21867:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d650 _ZN7QThread4execEv (libQt6Core.so.6 + 0x23d650)
                #6  0x00007de534b75f0e n/a (libQt6DBus.so.6 + 0x2df0e)
                #7  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #8  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #9  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28074:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28087:
                #0  0x00007de52791abb0 ppoll (libc.so.6 + 0x10bbb0)
                #1  0x00007de529f70227 n/a (libglib-2.0.so.0 + 0xc0227)
                #2  0x00007de529f0ca55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                #3  0x00007de5281a82bd _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a82bd)
                #4  0x00007de527f4ff66 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x14ff66)
                #5  0x00007de52803d650 _ZN7QThread4execEv (libQt6Core.so.6 + 0x23d650)
                #6  0x00007de529b63bd8 n/a (libQt6Quick.so.6 + 0x363bd8)
                #7  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #8  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #9  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28077:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28071:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a27e2 pthread_cond_timedwait (libc.so.6 + 0x937e2)
                #2  0x00007de5280d1bf8 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2d1bf8)
                #3  0x00007de5280cb852 n/a (libQt6Core.so.6 + 0x2cb852)
                #4  0x00007de5280cd237 n/a (libQt6Core.so.6 + 0x2cd237)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28084:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28085:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                
                Stack trace of thread 28086:
                #0  0x00007de52789fa19 n/a (libc.so.6 + 0x90a19)
                #1  0x00007de5278a2479 pthread_cond_wait (libc.so.6 + 0x93479)
                #2  0x00007de5126cebae n/a (libgallium-24.2.3-arch1.1.so + 0xcebae)
                #3  0x00007de5126ab5bc n/a (libgallium-24.2.3-arch1.1.so + 0xab5bc)
                #4  0x00007de5126ceadd n/a (libgallium-24.2.3-arch1.1.so + 0xceadd)
                #5  0x00007de5278a339d n/a (libc.so.6 + 0x9439d)
                #6  0x00007de52792849c n/a (libc.so.6 + 0x11949c)
                ELF object binary architecture: AMD x86-64

[vwbusguy]

edit: Yes, deleting .config/Nextcloud and .cache/Nextcloud (after having quit the client) does reset the client, and you can start fresh and re-create the desired accounts from there.

You don't need to delete the whole of that. The accounts are in nextcloud.cfg, enumerated with a 0/ 1/, etc. prefix. With Nextcloud client closed, remove all the entries with the number prefix from the account you want to remove.

[Legion495]

Hello!

Just ran into this yesterday because I changed my ports. I will quickly add simple to follow workaround instructions.
Either way so I am more or less always confused as I do not know all the paths in linux.
I will help those few lost souls now.

Most likely for a native installation you will find a hidden folder. That is why they have a dot in front of them.
I knew as much but was not sure where it resides. It is basically in home. You may need to check if it is the same for the flatpak.
The location for the native package: /home/legion495/.config/Nextcloud <- make sure to use your home directory instead.
There you find the nextcloud.cfg.
Just open it with any writer or editor. Anything that opens a .txt will work.

As the previous person noted the enumeration.
0 shows the first account
1 the second
2 etc.

To remove accounts (in my case the old one) delete all the 0 entries.
In these lines you will also be able to spot the account names if you happen to have multiple accounts.
Make sure to the delete the correct one otherwise just reconnect nextcloud if remove all accounts.