NPMplus WebUI API not healthy

[Foxxify1]

I've been using NPMplus for a while now! I just updated to latest (2026-04-21-r2) and I can't access the web ui, it loads for a while and says "The API is not healthy." While this is happening, my proxy hosts appear to be working.

Here's a portion of the log

npmplus] 2026-05-09T21:30:15.792739315Z 2026/05/09 15:30:15 [crit] 533#533: *28 connect() to unix:/run/npmplus.sock failed (2: No such file or directory) while connecting to upstream, client: 192.168.1.184, server: _, request: "GET /api/ HTTP/2.0", upstream: "http://unix:/run/npmplus.sock:/api/", host: "192.168.1.10:81"
[npmplus] 2026-05-09T21:30:17.834375301Z |2026-05-09T15:30:17.524: init_signaling_socket@ngx_cp_initializer.c:447 [uid 11 | pid 303] <session id 45> | Paired affinity disabled, sending target_core=-1 to service
[npmplus] 2026-05-09T21:30:17.838888622Z |2026-05-09T15:30:17.528: init_signaling_socket@ngx_cp_initializer.c:476 [uid 11 | pid 303] <session id 45> | Successfully connected on client socket 42
[npmplus] 2026-05-09T21:30:17.838972490Z |2026-05-09T15:30:17.528: init_signaling_socket@ngx_cp_initializer.c:501 [uid 11 | pid 303] <session id 45> | Could not connect to nano service. Path: /dev/shm/check-point/cp-nano-http-transaction-handler-11_secondary, Error: No such file or directory

I grabbed the release's docker compose file and changed the yml to have the same settings (openappsec, crowdsec, and everything to make them work) and it spins up fine without using my old data directory (/opt/npmplus is a named volume, and is created with the stack. All other directories are named volumes in the same way) and I can set a new admin user/password and navigate the web ui.

• As an aside, I get the Could not connect to nano service error even on the fresh install

However, when I use my old data directory (all other named volumes are fresh, created with the stack) I get this "connect to unix:/run/npmplus.sock failed (no such file or directory)" error.

How can I fix this? Am I able to copy over my proxy hosts, certificates, and access lists to a fresh install?

[Foxxify1]

My initial issue is very different than the one mentioned in that thread, I only mentioned the "could not connect to nano service" message because I thought they could be related.

[Foxxify1]

It appears as though the container doesn't connect to the socket? I never see "Backend PID listening on unix socket..." when using my (old) data volume while running the openappsec suite of services (Or just set NGINX_LOAD_OPENAPPSEC_ATTACHMENT_MODULE=true in the environment variables).

[Zoey2936]

can you please post the full startup log?

[Foxxify1]

Sorry it took a while to get back. Here's my startup logs after a few minutes.

npmplus-logs.txt

[Foxxify1]

I've changed nothing with my system (other than having all openappsec stuff disabled for the last few days and updating crowdsec today) and it appears to be working now. Closing as resolved.

[Foxxify1]

forgot to save my changes 🤦 it still isn't working

[Zoey2936]

could be related to #3200