Error 500 - Cannot save configuration when using docker

[maudrid]

❓ Question
I've deployed the docker container to my local host.
I checked that the config volume mapping is in place and working as recommended in the documentation.
When I access the web interface and place either text or yaml settings and try to save, the POST request to the server returns with internal server 500.
From the docker log, I can only see the request being logged with 500 response code, no other error messages.
I have also tried running the docker container without the volume mapping, but have the same result.

[caronc]

Sorry for the late reply, I've seen this issue come up a few times. It's to do with the permissions to your mounted /config directory from within your container. They aren't write permissions by your web user your docker container is running as to the external mount you set up.

[maudrid]

Thanks I got is working now.
It turns out that on the Docker Host, the user that was trying to access the config volume was www-data.
Giving that user access, fixed the problem.