[web2py] Python 3 - Traceback problems

So I'm trying to finally move my web2py apps over to Python 3.7 before Python 2.7 reaches EOL and, while for the most part they're working fine, I am finding that when there is a problem the web2py Error ticket is just about useless (doesn't tell you where the error actually occurs) because

[web2py] Re: MySQL based Web2Py app

Hi everyone, Following with the above subject. I'm not completely sure I haven't lost my track already, so I might be forgetting some of the things I tested. But somehow now I'm facing a different error. This is what I did. Starting from scratch: 1st I created a regular application in Web2py