No LAN web access

[umunas]

I am desperate and confused. I installed Jellyfin in Proxmox CT. Initially all was ok. I could access web interface for some time. No changes to network settings was made. Basically only a user created.
Jellyfin server is working. Checked and double checked for a few times:

root@jellyfin:~# systemctl status jellyfin
* jellyfin.service - Jellyfin Media Server
    Loaded: loaded (/lib/systemd/system/jellyfin.service; enabled; preset: enabled)
    Drop-In: /etc/systemd/system/jellyfin.service.d
            -jellyfin.service.conf
    Active: active (running) since Mon 2024-08-19 16:02:10 UTC; 1h 25min ago
  Main PID: 147 (jellyfin)
      Tasks: 16 (limit: 17825)
    Memory: 318.7M
        CPU: 15.038s
    CGroup: /system.slice/jellyfin.service
            -147 /usr/bin/jellyfin --webdir=/usr/share/jellyfin/web --ffmpeg=/usr/lib/jellyfin-ffmpeg/ffmpeg
Aug 19 17:02:13 jellyfin jellyfin[147]:    at Emby.Server.Implementations.IO.ManagedFileSystem.GetFiles(String path, IReadOnlyList1 extensions, Boolean enableCaseS>
Aug 19 17:02:13 jellyfin jellyfin[147]:    at Emby.Server.Implementations.IO.ManagedFileSystem.GetFiles(String path, Boolean recursive)
Aug 19 17:02:13 jellyfin jellyfin[147]:    at Emby.Server.Implementations.ScheduledTasks.Tasks.DeleteTranscodeFileTask.DeleteTempFilesFromDirectory(String directory>
Aug 19 17:02:13 jellyfin jellyfin[147]:    at Emby.Server.Implementations.ScheduledTasks.Tasks.DeleteTranscodeFileTask.ExecuteAsync(IProgress1 progress, Cancellati>
Aug 19 17:02:13 jellyfin jellyfin[147]:    at Emby.Server.Implementations.ScheduledTasks.ScheduledTaskWorker.ExecuteInternal(TaskOptions options)
Aug 19 17:02:13 jellyfin jellyfin[147]: [17:02:13] [INF] Clean Transcode Directory Failed after 0 minute(s) and 0 seconds
Aug 19 17:02:13 jellyfin jellyfin[147]: [17:02:13] [INF] jellyfin.db optimized successfully!
Aug 19 17:02:13 jellyfin jellyfin[147]: [17:02:13] [INF] Optimize database Completed after 0 minute(s) and 0 seconds
Aug 19 17:02:16 jellyfin jellyfin[147]: [17:02:16] [INF] Refreshing guide with 7 days of guide data
Aug 19 17:02:16 jellyfin jellyfin[147]: [17:02:16] [INF] Refresh Guide Completed after 0 minute(s) and 3 seconds

Tried using Android app, but result is similar, server is not visible. I get an error 

Tried 5 candidates for input, without success.

It is a new Proxmox installation. No custom firewall rules created. I even disabled firewall completely. Same with the router. I am making assumption that something is blocking Jellyfin in the networks, but for the love of all that is holly, I just can't find what. I even created new CT in Proxmox from scratch and the result is the same. I am sure there is some very stupid issue solvable very easily, but after 8 hours trying to solve it I just have no idea what should I do next.

[umunas]

Why the solution appears after you vent in the internet?.. I need make sure if that is actually a solution, but is looks like I made a mistake during CT network configuration. I configured IPv4/CIDR as 192.168.X.XX/32 (according some tutorial) and it looks like that caused trouble. After changing to 192.168.3.20/16 everything started working. At least for now.

Credits for showing the way goes here: https://forum.proxmox.com/threads/solved...ts.119974/