Installed the 22.214.171.124 update after Intellij notified me of availability. After restart, it Intellij threw an error. Removed plugin from disk manually, then restarted, Intellij started fine. Downloaded 126.96.36.199 manually and installed, and encountered the plugin manager error again. Downloaded 188.8.131.52 manually and installed, and Intellij started fine.
Issue #1347 resolved