SOLVED: Not being able to delete media or relocate transcode folder to NAS storage

[Diaxpel]

I'm running Jellyfin as a LXC container (installed via tteck's script) in Proxmox, alongside a TrueNAS Scale VM. To mount the NAS storage to Jellyfin, I used autofs with SMB share.

I first create a group on the LXC using this:

Code:

groupadd -g 10000 lxc_shares

and

Code:

usermod -aG lxc_shares jellyfin

Then, go to 

Code:

nano /etc/auto.nfs

and enter this:

Code:

truenas-jelly  -fstype=cifs,rw,uid=100000,gid=110000,username=username,password=password ://192.168.31.201/jellyfin-media

Lastly, save the file and use 

Code:

service autofs reload

to refresh.

When login as root or even jellyfin as a user, I can easily delete or add files through the shell.

However, I can't seem to the same task when I use the web UI. Furthermore, relocating the transcode folder to the NAS results in Jellyfin not being able to play the video. I've checked the log and it said "permissions denied" after attempting to create a .ts file.

Please help me as I'm a newbie to this field. I may have misconfigure something that is way out of my knowledge.