add handling in validating response if error is a list (#19)

---------

Co-authored-by: Hassan Syyid <hassansyyid@gmail.com>

src/tap_intacct/client.py

@@ -217,11 +217,14 @@ def _post_request(self, dict_body: dict, api_url: str) -> Dict:
             if api_response['result']['status'] == 'success':
                 return api_response
 
+            logger.error(f"Intacct error response: {api_response}")
+            error = api_response.get('result', {}).get('errormessage', {}).get('error', {})
+            desc_2 = error.get("description2") if isinstance(error, dict) else error[0].get("description2") if isinstance(error, list) and error else ""
             if (
                 api_response['result']['status'] == 'failure'
-                and api_response.get('result', {}).get('errormessage', {}).get('error', {}).get('description2')
+                and error
                 and "There was an error processing the request"
-                in api_response['result']['errormessage']['error']['description2']
+                in desc_2
                 and dict_body["request"]["operation"]["content"]["function"]["query"][
                     "object"
                 ]