[BUG] Rare characters in a filesystem mounted of a volume

[Falcom8]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

I honestly don't think it's a bug, I just don't know how to configure it to avoid this error, maybe you can help me.
I have a docker container running on a Synology nas, and when I mount volumes in the plex container, if the files have Spanish characters it shows me weird characters. I've tried updating the container's environment variables to select the correct server locations, but it's still the same, any ideas?

Expected Behavior

No response

Steps To Reproduce

Adding volumes of the synology stores with files with spanish characters like ñ,á,é,í...

Environment

- OS:
- How docker service was installed:

CPU architecture

x86-64

Docker creation

services:
  plex:
    image: lscr.io/linuxserver/plex:latest
    container_name: plex
    environment:
      - PLEX_UID=1026
      - PLEX_GID=100
      - TZ=Europe/Madrid
      - VERSION=docker
      - PLEX_CLAIM=**
      - LANGUAGE=es_ES.UTF-8
      - LANG=es_ES.UTF-8
    volumes:
      - /volume1/docker/data_plex:/config
      - /volume2/video/:/video
    restart: unless-stopped

Container logs

.

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