code: async def _handle_fb_response(self, response: aiohttp.ClientResponse):
          
  
          ok = response.status == 200
  
          if not ok:
              # noinspection PyBroadException
              try:
                  error = (await response.json())['error']['message']
              except Exception:
                  error = '(nothing)'
  
              raise PlatformOperationError('Facebook says: "{}"'
                                           .format(error))
docs: Check that Facebook was OK with the API call we just made and raise
          an exception if it failed.