Sure there are plenty who 'can'.
'will' on the other hand is another matter.
100K+ of source code scattered through a couple of dozen source files is a hell of a lot to ask someone else to fix for you.
Especially with your "no clues" approach, like error messages, specific test cases which malfunction or anything like that. It's just dumped on us.
My first question is:
how much of that code did you write before you noticed there was a problem?