A lot of my day job as a developer is troubleshooting. A missing semi-colon, an unbalanced parenthesis, or an outdated reference to a wrong identifier, and WHAM, you get a bug.
But the good news is, all bugs are ultimately fixable. Technical know-how is important, but just as important is the ability to patiently triage the problem in the first place.
I COULD tear my hair out over this stuff. But instead I'm grateful that simple patience helped me find the problems.