Web UI not working

[katonjet]

Describe the bug
Nothing shows up in the Web UI version of VS Codium in browser. Just a blank screen. The frontend seems to be facing an issue displaying the UI according to the browser console when using the latest version of VS Codium(14bd1561ce547502e6ff1968090dc18c49160aab/1.105.17075.0). Tried opening the same UI page in another browser as well using the URL displayed from the console(by running codium serve-web command), still the same issue. However, if I remove the latest release folder 14bd1561ce547502e6ff1968090dc18c49160aab from the /home/[REDACTED]/.vscode-oss/cli/serve-web directory and remove the same string from the lru.json file and run the web server without internet (to prevent it from downloading the latest release), VS Codium falls back to the previously downloaded server and the Web UI starts working again.

I also tried using the latest version(as of 26th October 2025) of VS Code from Microsoft to see if its an issue from VS Code itself. However, the Web UI works perfectly fine without issues.

Please confirm that this problem is VSCodium-specific

• This bug doesn't happen if I use Microsoft's Visual Studio Code. It only happens in VSCodium.

Please confirm that the issue/resolution isn't already documented

• I checked the Docs page and the Troubleshooting page and my issue is not mentioned there.

To Reproduce
Steps to reproduce the behavior:
Run codium serve-web in Terminal

Expected behavior
VS Codium UI showing up in web browser, similar to VS Code Web Server.

The error displayed in the browser console (Frontend)

This error does not show up in the browser if I use the fallback trick I mentioned to run VS Codium Web Server

ERR [createInstance] hoverService depends on IUserDataSyncLogService which is NOT registered.: Error: [createInstance] hoverService depends on IUserDataSyncLogService which is NOT registered.
    at GIt._throwIfStrict (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:5503)
    at GIt._createAndCacheServiceInstance (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:3544)
    at GIt._safeCreateAndCacheServiceInstance (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:3089)
    at GIt._getOrCreateServiceInstance (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:2810)
    at Object.get (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:1073)
    at http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:3812:108066
    at GIt.invokeFunction (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:1443:958)
    at Iln.startup (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:3812:107990)
    at Rcn.open (http://127.0.0.1:8000/stable-14bd1561ce547502e6ff1968090dc18c49160aab/static/out/vs/code/browser/workbench/workbench.js:3816:2771)

Console Output

VSDA error shows up when using both latest version and fallback method. This does not affect the Web UI issue.

[REDACTED]:~$ codium serve-web --verbose --log trace

Web UI available at http://127.0.0.1:8000?tkn=[REDACTED]
[2025-10-26 20:00:25] debug [reqwest::connect] starting new connection: https://raw.githubusercontent.com/
[2025-10-26 20:00:25] debug Resolved quality Stable to 14bd1561ce547502e6ff1968090dc18c49160aab
[2025-10-26 20:00:25] debug refreshed latest release: 1.105.17075 (commit 14bd1561ce547502e6ff1968090dc18c49160aab)
[2025-10-26 20:00:26] info Starting server 14bd1561ce547502e6ff1968090dc18c49160aab
[2025-10-26 20:00:26] info [14bd156 stdout]: Server bound to /tmp/codium-[REDACTED]
[2025-10-26 20:00:26] info [14bd156 stdout]: Extension host agent listening on /tmp/codium-[REDACTED]
[2025-10-26 20:00:26] info [14bd156 stdout]: 
[2025-10-26 20:00:26] info [14bd156 stdout]: [20:00:26] 
[2025-10-26 20:00:26] info [14bd156 stdout]: 
[2025-10-26 20:00:26] info [14bd156 stdout]: 
[2025-10-26 20:00:26] info [14bd156 stdout]: 
[2025-10-26 20:00:26] info [14bd156 stdout]: 
[2025-10-26 20:00:26] info [14bd156 stdout]: [20:00:26] Extension host agent started.
[2025-10-26 20:00:29] trace websocket upgrade succeeded
[2025-10-26 20:00:29] info [14bd156 stderr]: File not found: /home/[REDACTED]/.vscode-oss/cli/serve-web/14bd1561ce547502e6ff1968090dc18c49160aab/node_modules/vsda/rust/web/vsda_bg.wasm
[2025-10-26 20:00:29] info [14bd156 stderr]: File not found: /home/[REDACTED]/.vscode-oss/cli/serve-web/14bd1561ce547502e6ff1968090dc18c49160aab/node_modules/vsda/rust/web/vsda.js
[2025-10-26 20:00:29] info [14bd156 stdout]: [20:00:29] [<unknown>][16a3f9c3][ManagementConnection] New connection established.

Desktop (please complete the following information):

• OS: Debian 12 Bookworm
• Architecture: x64
• Version(uname -a): Linux [REDACTED] 6.1.0-40-amd64 (HASH)1 SMP PREEMPT_DYNAMIC Debian 6.1.153-1 (2025-09-20) x86_64 GNU/Linux
• App Manager: apt
• Sandboxed: No

Additional context
n/A

[daiyam]

Yep, same error about vsda when using the Web Host...

It's a MS proprietary piece that I don't know where I can't get my hand one.

It was working before so I will to check what changed in Visual Studio Code.

[daiyam]

On 1.104, the vsda error is still there but it's still working. So it isn't the issue.

This is the issue:

hoverService depends on IUserDataSyncLogService which is NOT registered

surely due to this patch https://github.com/VSCodium/vscodium/blob/master/patches/disable-settingssync-logger.patch

I will fix the issue...

[kyflores]

Hi, I have this same issue when installing from the snap, where I tried stable (1.105.17075) and edge (1.106.27818).

I downloaded the vscodium-reh-web-linux tar.gz's from the releases page for the build before and after the patch you mentioned to check.

vscodium-reh-web-linux-x64-1.105.16954.tar.gz works (before)
vscodium-reh-web-linux-x64-1.105.16999.tar.gz shows just a blank page like OP described.

[kyflores]

Tested edge (1.106.37943) from snap installation today and the web interface works - thank you!