Path Reserved by Docker

I’m testing out an app that is build in docker (UCRM). Got it all working great, but I made the mistake of adding a bunch of subdirectory links in my file sharing tab, so I deleted them with the idea that I would just share the parent directory instead and let the app find all the subdirectories via the one share point.

However, it wouldn’t let me add the directory or re-add the subdirectories to the list. Every time I try to add one back I get the error:

"The Path ‘/foo’ is reserved by Docker however it may be possible to export specific subdirectories. Please see the documentation for more information.’

I killed the containers that were using the mounts, restarted docker, etc but it doesn’t seem to make any difference. How do I remove these directories from Docker so that I can add them back again?