SDCH-4144: exception logging to find the root cause of the problem

SAS/TMSS/backend/services/feedback_handling/lib/feedback_handling.py

@@ -57,7 +57,7 @@ def read_feedback_message_and_process(old_qpid_frombuses, timeout: float=1):
                                 logger.info("received message from qpid queue='%s'",  old_qpid_frombus.receiver.source.address)
                             except AttributeError as e:
                                 # log errors from the parsing the qpid messages, see https://support.astron.nl/jira/projects/SDCH/queues/custom/81/SDCH-4144
-                                logger.exception("%s\mignoring unprocessable message with body:\n%s", str(e), str(msg.body))
+                                logger.exception("%s\mignoring unprocessable message with body:\n%s\n%s\n", str(e), str(msg), dir(msg), repr(msg))
                             finally:
                                 # always ack (even when the above AttributeError occurs), so we can continue with the next message
                                 old_qpid_frombus.ack(msg)