Error with `/etc/opt/simplex-xftp/fingerprint` not existing in container usage

I have my mount points setup correctly and was able to get it to run once, but after recreating my containers I then ran into a problem again.

Attaching to simplex-smp, simplex-xftp
simplex-xftp  | xftp-server: /etc/opt/simplex-xftp/fingerprint: withFile: does not exist (No such file or directory)
simplex-smp   | smp-server: /etc/opt/simplex/fingerprint: withFile: does not exist (No such file or directory)
simplex-xftp exited with code 1
simplex-smp exited with code 1

I have tried several things. Spinning the containers down, recreating the directories (used for the bind mounts) and then spinning them up again. I still get the same error.

compose.yml

Basically looks something like this for xftp:

    volumes:
      - /mnt/datadisk/volumes/simplex/xftp/config:/etc/opt/simplex-xftp

And this for smp:

    volumes:
      - /mnt/datadisk/volumes/simplex/smp/config:/etc/opt/simplex

Start with compose.yml and inspect the bind mounts for /etc/opt/simplex-xftp and /etc/opt/simplex, then compare them with the host directories after container recreation. Reproduce the startup failure and determine why the fingerprint files are unavailable; done means both containers start successfully with the configured mounts.