To add to this (and not to hijack your thread), there have also been issues with S06E03 of The Good Fight (The Good Fight - TheTVDB.com) and S09E15 and S09E16 of VICE (VICE - TheTVDB.com). I use the TVDB by default (unlike @anon5074910), but Plex is going by TMDB for VICE, which has the series split into two separate ones (doesn’t make sense, but oh well). Either way, there must be some broken links somewhere, as usual. Just FYI…
In the past when this has happened for multiple shows, plex has been doing some large back-end metadata work which caused delays and/or breaks for random shows. I wonder if that is what is happening here …