Plex plugin "Server settings are unavailable" after update

Updated Plex plugin from 1.14 to 1.15 using iocage update from command line, on FreeNAS 11.2-U3. Afterwards, in the Plex web UI, the "Settings" menus do not work, with error "Server settings are unavailable".

When this happened, I tried for a "cleaner" update, with the same result:

• Roll back plugin jail
• Reboot FreeNAS
• Stop jail
• Update jail via iocage update
• Reboot FreeNAS

For now, I'll roll back to 1.14.

Side-note: I tried to submit this via FreeNAS with "debug", but get "[EINVAL] Connection error while submitting ticket", hence directly via Jira