Try this urlparser it has all the latest updates, should work on Mario PY3, remember when adding a new urlparser to IPTVPlayer\libs folder, you have to delete urlparser.pyo file that is in the same folder so the only files with urlparser name should be the new 1 you add and urlparserhelper.py, then reboot your box and see if it works for you.
Ok your urlparser for Mario repo isn't ok.....i have manually install your version of IPTV player and not work, same error!!
From the pic you posted its looks like a larger error than just the urlparser issue.
The version from the txt file is not mine, its one from a facebook page and it works well according to users on the facebook group and I tried it on my old box, which is py2 , and it works well. I dont run py3 so cannot say if it works on that.