This is one of points that wb_terms is being used as search backend which it shouldn't so it needs to be disabled for now.
Customize query in gerrit
|Resolved||PRODUCTION ERROR||Addshore||T195520 Multiple projects reporting Cannot access the database: No working replica DB server|
|Resolved||Ladsgroup||T195751 Enable search integration with Article Placeholder again|
|Resolved||Ladsgroup||T195752 Migrate search integration of ArticlePlaceholder to elastic|
|Resolved||Ladsgroup||T195753 Disable search integration with Article Placeholder temporarily|