Javascript reference error only in Canvas

Hello everybody.  My javascript skills are a little rusty so I am hoping someone will take mercy on me and help me dubug this script.  We are trying to use a 3rd party script (see https://g...

Is there a report that we can run that will give us a list of any pending invitations across all of the courses in our domain? If not, how could we go about getting that information short of manually accessing the people page for each and every course?

This is particularly a concern for students that have been invited but have not yet created an account (and are therefore not yet listed as users).