Ladies and gentlemen, I can clear that up. They occasionally have to run server maintenance, and when that involves updating wiki farm wide service like commonly used extensions or something similar, we'll get 500 errors until they finish since the wiki is temporarily down (the database is disconnected) until they finish.
This is often required when they have to update database tables with sensitive information that could be damaged if they are interrupted for any reason, like overload due to too much server traffic.
This is often required when they have to update database tables with sensitive information that could be damaged if they are interrupted for any reason, like overload due to too much server traffic.