as you already have created a new topic for your new error, I am replying on that created topic to avoid confusion.
Also point to be noted, it seems even after you having not passed test cell you are submitting assignment, having type error on submisson cannot happen until you encountered that error while writing incorrect code for a grade function. So always focus on first making sure your grade function cells are correctly coded before submission. this saves your time and ofcourse makes you better at debugging your codes.