
I found the file in my build-directory:
/spring_0.80.5.2/installer/builddata/maphelper/maphelper/parse_tdf.lua
I renamed the directory to something else, started Springlobby, no errors for me. I've searched for the file in my system and this is the only place it exist.
Try reinstalling springlobby?
Edit: Why are you using Spring 0.80.5.1 intead of the latest version?
Edit2: What version of springlobby is installed?