Your comment shows some ignorance mixed with lack of experience. Errors do happen due to many reasons, and there is no project on earth that is nearly as documented as you pretend them all to be. This is one of the reasons why googling for error messages ended up being a very basic and mundane technique in software engineering.

What makes your comment stand out is the fact that you are completely unaware that some projects even use Stack Overflow to help users troubleshoot issues, with project maintainers taking the lead in providing answers. But here you are, pretending that reading docs is a silver bullet