Requesthandler ignore missing devices logging (#2749)

Co-authored-by: Sebastian Petersen <[email protected]>

Author: embedded-bed

pymodbus/server/requesthandler.py

@@ -97,9 +97,10 @@ async def handle_request(self):
             response = await self.last_pdu.update_datastore(context)
 
         except NoSuchIdException:
-            Log.error("requested device id does not exist: {}", self.last_pdu.dev_id)
             if self.server.ignore_missing_devices:
+                Log.debug("ignoring request for unknown device id: {}", self.last_pdu.dev_id)
                 return  # the client will simply timeout waiting for a response
+            Log.error("requested device id does not exist: {}", self.last_pdu.dev_id)
             response = ExceptionResponse(self.last_pdu.function_code, ExcCodes.GATEWAY_NO_RESPONSE)
         except Exception as exc:  # pylint: disable=broad-except
             Log.error(