I’m running the last version of Xibo on Docker. It looks fine, but I can’t save any information within the GUI (tried updating user information, tried changing settings Xibo.
Or the wheel keeps spinning, or the save button doesn’t work.
I’m not sure yet, the actual error that you have there is only about the feed on dashboard, which if wasn’t changed is slightly odd that your CMS can’t get it.
Regarding the bootstrap-select error, that’s also rather odd, this file should exist in the installation (unless you have something blocking js /jQuery perhaps?)