I created a survey using a hosted feature service with a related table. The geopoint question was set to auto-calculate coordinates based on the answer to a previous question using pulldata functions. It also uses external choice list and cascading selects. Once I published it, the geopoint question shows an unspecified error. The coordinates populate properly, and the point is dropped at the right location, but the question lights up in red as an error, and when I try to submit the survey I receive a message saying there's one error, and moves me to the geopoint question. I've tried manually setting the location, searching for an address, and submitting the survey without having any coordinates, and all generate an error.
Thinking it was an error with the geopoint question, I re-published the survey without any of the fields that were related to it. I still receive an error, saying just "Failed to submit." No questions are lighting red, no error code, nothing to tell me why it failed.
What is causing the error? How can I fix it?
Attached is the excel file, and fgd of the data.