Thread:Project:Support desk/Uncommitted DB writes (transaction from DatabaseBase::query (MessageBlobStore::clear))

Hi, I have MW 1.22.6 installed via xampp, when I try to change $wgLanguageCode = "en" to $wgLanguageCode = "it", I get this error: '''Uncommitted DB writes (transaction from DatabaseBase::query (MessageBlobStore::clear)). in C:\xampp\apps\mediawiki\htdocs\includes\db\Database.php on line 3944'''. How can I fix it?