TypeError: Object of type Message is not JSON serializable

Hi, does anyone here know why i could be getting this type of error? im currently customizing telegram channel. thank u so much

Traceback (most recent call last): File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/core/processor.py”, line 772, in _run_action events = await action.run( File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/core/actions/action.py”, line 685, in run response = await self.action_endpoint.request( File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/utils/endpoints.py”, line 146, in request async with session.request( File “/home/ndn/venvrasa/lib/python3.8/site-packages/aiohttp/client.py”, line 1117, in aenter self._resp = await self._coro File “/home/ndn/venvrasa/lib/python3.8/site-packages/aiohttp/client.py”, line 390, in _request data = payload.JsonPayload(json, dumps=self._json_serialize) File “/home/ndn/venvrasa/lib/python3.8/site-packages/aiohttp/payload.py”, line 381, in init dumps(value).encode(encoding), File “/usr/lib/python3.8/json/init.py”, line 231, in dumps return _default_encoder.encode(obj) File “/usr/lib/python3.8/json/encoder.py”, line 199, in encode chunks = self.iterencode(o, _one_shot=True) File “/usr/lib/python3.8/json/encoder.py”, line 257, in iterencode return _iterencode(o, 0) File “/usr/lib/python3.8/json/encoder.py”, line 179, in default raise TypeError(f’Object of type {o.class.name} ’ TypeError: Object of type Message is not JSON serializable 2021-07-18 13:14:16 ERROR rasa.core.tracker_store - Error happened when trying to save conversation tracker to ‘InMemoryTrackerStore’. Falling back to use the ‘InMemoryTrackerStore’. Please investigate the following error: Object of type Message is not JSON serializable. 2021-07-18 13:14:16 ERROR addons.custom_telegram - Exception when trying to handle message.Object of type Message is not JSON serializable Exception occurred while handling uri: ‘http://xxx.ngrok.io/webhooks/custom/webhook’ Traceback (most recent call last): File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/core/tracker_store.py”, line 1232, in save self._tracker_store.save(tracker) File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/core/tracker_store.py”, line 314, in save serialised = InMemoryTrackerStore.serialise_tracker(tracker) File “/home/ndn/venvrasa/lib/python3.8/site-packages/rasa/core/tracker_store.py”, line 262, in serialise_tracker return json.dumps(dialogue.as_dict()) File “/usr/lib/python3.8/json/init.py”, line 231, in dumps return _default_encoder.encode(obj) File “/usr/lib/python3.8/json/encoder.py”, line 199, in encode chunks = self.iterencode(o, _one_shot=True) File “/usr/lib/python3.8/json/encoder.py”, line 257, in iterencode return _iterencode(o, 0) File “/usr/lib/python3.8/json/encoder.py”, line 179, in default raise TypeError(f’Object of type {o.class.name} ’ TypeError: Object of type Message is not JSON serializable