Slow web interface, "Media not found", works fine with Roku

Server Version#: 1.20.0.3181-0800642ec (Ubuntu 16.04, 4.4.0 kernel)
Player Version#: Web, Firefox 79.0 (MacOS 10.15.5)

Hi folks, I updated to this version maybe a week back or so, I noticed it’s not on the main /Downloads page anymore. Anyone else running into a slow web interface, and occasionally
“Media not found.
The media you’re trying to access doesn’t seem to exist.” while browsing through settings?

My roommates are currently watching something on the Roku in the living room just fine, I watched something last night on my other laptop, but today had a very slow to load web interface while attached to the same network that my PMS runs on. Server is at very low load, only shows my main user when it does load, and has some errors with the status of PMS:

[21:52] hybrid@billon:~$ less /var/log/syslog | grep -i plex | grep -E 'ERROR|fail'
Aug 17 15:01:46 billon Plex Media Server[11875]: Got nothing for: David Blue an IntervERROR: Could not open the input file (No such file or directory)
Aug 17 15:01:46 billon Plex Media Server[11875]: ERROR: Could not open the input file (No such file or directory)
Aug 17 15:01:47 billon Plex message repeated 4 times: [ Media Server[11875]: ERROR: Could not open the input file (No such file or directory)]
Aug 17 17:38:11 billon Plex Media Server[11875]: Got nothing for: David Blue an Intervudc input failed with 1011
Aug 17 17:38:12 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 17:38:23 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 17:39:18 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 17:39:19 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 17:39:39 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 17:41:37 billon Plex message repeated 5 times: [ Media Server[11875]: udc input failed with 1011]
Aug 17 17:55:15 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 17:55:31 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 18:08:43 billon Plex Media Server[11875]: ERROR: Could not open the input file (No such file or directory)
Aug 17 18:08:44 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 18:08:44 billon Plex Media Server[11875]: udc input failed with 1011
Aug 17 18:10:01 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 18:11:56 billon Plex message repeated 4 times: [ Media Server[11875]: ERROR: The argument for -length must be a positive number]
Aug 17 18:21:59 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 18:22:42 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 18:35:15 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number
Aug 17 19:21:19 billon Plex Media Server[11875]: ERROR: The argument for -length must be a positive number

Chalk it up to issues with the release? Just rollback to the latest v1.19?

*Edit: Forced refresh the page and had my media show up - got a video to play fine, still slow UI and “Media not found”. In the past I had issues with the media database, maybe it’s shitting the bed again?

*Edit2: Sounds like there’s some auth issues to plex.tv going around across multiple platforms (Thanks @rmhochman), I’ll snooze on it