fix: #81 - cli raising exception for diagnostic data

Author: humbertogontijo

roborock/cloud_api.py

@@ -164,7 +164,11 @@ async def _send_command(
         msg = MessageParser.build(roborock_message, local_key, False)
         self._send_msg_raw(msg)
         (response, err) = await self._async_response(request_id, response_protocol)
-        self._diagnostic_data[method.name] = {"params": params, "response": response, "error": err}
+        self._diagnostic_data[method if method is not None else "unknown"] = {
+            "params": params,
+            "response": response,
+            "error": err,
+        }
         if err:
             raise CommandVacuumError(method, err) from err
         if response_protocol == 301: