Is tf2maps was down recently for everyone, or just me? There was an error looking like: Blah blah, MySQL error, blah blah, on line 77. Admins, is everything ok?
If something ever goes wrong in computing generally, stick to the instructions in this helpful video and you will be fine.
The title of this thread is literally the name of a website that helps answer this question: http://www.downforeveryoneorjustme.com/