Our website stopped working. A coworker said her guess from an error she saw in the logs was that it might have something to do with a bit of a commented line in .htaccess taking itself out of comment and into code due to a specific set of characters the line contained. I looked at .htaccess and thought “Nah, that can’t be it.” and proceeded to troubleshoot pretty much everything but that. After 30 minutes my coworker opened the file and fixed the comment and all was well. I felt stupid because on our team I’m supposed to be the expert that figures out stuff like this.