Docker compose backup runs for hours

I've just started backing up my docker after a near death of my OMV server and am having some issues.

1. The compose-backup starts at 4am as per my cron job and then loops for two hours before crashing. omv-compose-backup.txt
2. The backup only ever backs up my Plex container even though I have the filter set to blank (should backup all?)
   1. I assume this is related to #1

Here is my Plex compose file

---
version: "2.1"
services:
  plex:
    image: lscr.io/linuxserver/plex:latest
    container_name: plex
    network_mode: host
    environment:
      - PUID=${PUID}
      - PGID=${PGID}
      - TZ=${TZ}
      - VERSION=latest
    volumes:
      - ./transcode:/transcode
      - ./config:/config
      - /etc/localtime:/etc/localtime:ro
      - CHANGE_TO_COMPOSE_DATA_PATH:/multimedia
    restart: unless-stopped

Thanks for the post.

I will wear the risk of the Plex config folder living on my boot drive as it is big enough.

I don't understand what this has to do with my problem though?

Quote from raulfg3

./config:/config

please understand how volumes works:

I think you are trying to say I need to exclude my CHANGE_TO_COMPOSE_DATA_PATH from the backup?

You might be right, but it is running at 4am as expected.

It ran "correctly" last night, except for the fact it sent me 65 Cron emails saying it was finished backing up and my Plex and Unifi containers were not automatically restarted like all the other *arr containers...

Once again Cron has bested me.

Think it's all correct now, thanks everyone for the help.