Should put a note on your blog that Lidarr’s Metadata database is being rebuilt, currently the Lidarr APi spits a bunch of 5xx errors when searching for artists/albums/etc.
https://github.com/Lidarr/Lidarr/issues/5498
If you currently have a library on the stable build the Lidarr team could use some help building the cache, they made this tool:
https://github.com/DeviantEng/lidarr-cache-warmer
It’ll search every artist in your Lidarr library so that the new database has a cache to quickly call upon.