Flask crashes with ValueError: too many values to unpack
My best guess is that you return a special headers dictionary (from python-requests) instead of a normal one. Flask takes the headers in two forms:
{'key': 'value'}# and[('key', 'value')]Since your special dict is not recognized as a real dict, it will be treated like a list of tuples, which fails.
Change
return r.text, r.status_code, r.headersto
return r.text, r.status_code, r.headers.items()