Traceback (most recent call last):
File "D:\wwwroot\MARINE-ANALYST\siteweb\dev.py", line 1283, in
if response.headers['Content-Type'] != 'image/png':
File "C:\python36\lib\site-packages\requests\structures.py", line 54, in __getitem__
return self._store[key.lower()][1]
KeyError: 'content-type'