Issues running script

[kdarragh1994]

Hi, I get the following error message when running the script:

Traceback (most recent call last):
File "compare_annotations.py", line 163, in
main()
File "compare_annotations.py", line 49, in main
old_record = next(old)
File "/Users/kathy/opt/anaconda3/lib/python3.8/site-packages/Bio/SeqIO/Interfaces.py", line 73, in next
return next(self.records)
StopIteration

Any ideas what might be going on?

Thank you!