OK, so I was making this website for a university event. After publishing it, I start getting calls that the registration form isn't working. So I review the code and fix the problem. But when I push it to production, the problem still persists, all this while the event management is breathing down my neck because they can't get any registration! kept on trying for the whole fucking day, switched off my phone and went to sleep! The next morning, I find out, I had been pushing the old version of the file! Yes! I felt incompetent and stupid!