FreeNAS 11.2-U5 system set up cleanly about a month ago. Only some basic shares and the Plex (w/ Plexpass) plug-in installed via the instructions in the official ixsystems youtube plex plug-in video.
I received a notice about the U6 update for FreeNAS and applied it. Upon rebooting, Plex is unavailable and attempts to contact its web management interface results in ERR_CONNECTION_REFUSED.
Attempts to update the plug-in and/or the jail via the FreeNAS GUI fail. For the plug-in, I receive the error in the attached screenshot.
I can't stress this enough: No other actions were taken. Merely the update to FreeNAS U6 on a simple FreeNAS install resulted in this state for the Plex (w/ Plexpass) plug-in.
I have, of course, rebooted the FreeNAS box, restarted the plug-in. And I have tried to assign an IP directly to the Plex jail. It normally gets the IP via DHCP. I am able to ping local and remote hosts via jail's shell.