A database error has occurred. Did you forget to run maintenance/update.php after upgrading? See: https://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script
Query: SELECT value,exptime FROM `objectcache` WHERE keyname = 'bmwiki:messages:ru' LIMIT 1
Function: SqlBagOStuff::get
Error: 144 Table './bmwiki/objectcache' is marked as crashed and last (automatic?) repair failed (localhost:3306)