Check a little better on the return object

fourinsight/campaigns/api.py

@@ -437,7 +437,7 @@ def get_swimops_campaign(self, campaign_id):
         }
 
         response = self._get_payload(self._url(f"/{campaign_id}/Swimops"))
-        if not response:
+        if not response or not isinstance(response, list):
             return
         response_out = _dict_rename(response[0], response_map)
         return response_out