Sorry to hear it didn’t work for you. I am making the assumption your using the original pull which were from https://github.com/AdamMoses-GitHub/NPMJS-rt-scraper.
Unfortunately, I modified the original MMM-RottenTomatoes, so I don’t have a like for a like environment, but assumed correction would work for the original module.
The root of the problem is Rotten Tomato new web format, which is part of rt-scraper (which you found).
As indicate my fix were based on another user correction. You can attempt to pull or replace using his build.
https://github.com/parnic/NPMJS-rt-scraper
He has also updated his repo for RottenTomatoes module it self and updated the dependency. I haven’t tried it, but seem he best overall re-package solution.
https://github.com/parnic/MMM-RottenTomatoes
If that still doesn’t work and have time I can re-package my update, but it would be base on slight modified version of MMM-RottenTomatoes.