Apps "succsesfully" Start but immediatley stop running after updating

[Tallmonster2]

This startes first with immich a few months ago but I did'nt really use it a lot so I wasn't too bothered with it. 

Then this morning I updated JellyFin (Self Installed but was working flawlessly until this morning) and my server and the same is happening with jellyfin.

Any idea as to what is happening and how I can solve it? any help is greatly appreciated

[Tallmonster2]

truenas ui says deploying but they don't, I am at a loss for what to do right now aside from a fresh install which I would prefer not to do. I did to a fresh install of immich multiple times as that was the one I was less concerned with messing with but that doesn;t work either. would prefer not to have to resetup jellyfin. 

[Tallmonster2]

I can roll back jellyfin updates while it is deploying so it is on version 1.1.22 now but that hasn't changed anything

 

[Tallmonster2]

https://youtu.be/WNHJey3_gVk?si=DAf0uftIFAglkhN1

[Tallmonster2]

An example of it failing to deploy an app

[Novice_Ninja]

I'm having the same issue, I checked the logs in truenas while the app is starting and get the following:

 

2026-03-22 10:50:51.995861+00:00Unhandled exception. System.UnauthorizedAccessException: Access to the path '/cache/.jellyfin-cache' is denied.
2026-03-22 10:50:51.995892+00:00---> System.IO.IOException: Permission denied
2026-03-22 10:50:51.995900+00:00--- End of inner exception stack trace ---
2026-03-22 10:50:51.995906+00:00at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirError)
2026-03-22 10:50:51.995916+00:00at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String path, OpenFlags flags, Int32 mode, Boolean failForSymlink, Boolean& wasSymlink, Func`4 createOpenException)
2026-03-22 10:50:51.995922+00:00at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, UnixFileMode openPermissions, Int64& fileLength, UnixFileMode& filePermissions, Boolean failForSymlink, Boolean& wasSymlink, Func`4 createOpenException)

It seems like it cannot access the /cache folder. Will investigate further.

[Novice_Ninja]

On 3/19/2026 at 9:44 PM, Tallmonster2 said:

An example of it failing to deploy an app

Can confirm same behavior on my end.

[Novice_Ninja]

Alright, maybe not the solution you want but it worked for me. I installed jellyfin through truenas. This guide will point you generally correctly, https://jellyfin.org/docs/general/installation/advanced/truenas/. The important bit is to add your 'Movies' and 'Shows' folders under Additional storage. Hope it helps!