Hello guys,

I am encountering issue in my project. This project is getting data from my aws iot core via subscribing into topic. It is working fine locally. However, when I deployed it in Render, It is now raising a:

raise subscribeTimeoutException()
AWSIoTPythonSDK.exception.AWSIoTExceptions.subscribeTimeoutException

what could be the problem?
-I already changed the policy into like this:
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": "iot:*", "Resource": "arn:aws:iot:ap-northeast-1:187614391418:*" } ] }

by the way, the Render web service server is in "Oregon (US West)" while my aws iot core is using the "Asia Pacific (Tokyo) ap-northeast-1" could it affect the network connectivity? but I doubt.

Here is the traceback of the error:

Subscribe timed out
Aug 26 07:21:35 AM [2023-08-25 23:21:35,017] ERROR in app: Exception on /_dash-update-component [POST]
Aug 26 07:21:35 AM Traceback (most recent call last):
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/flask/app.py", line 2529, in wsgi_app
Aug 26 07:21:35 AM response = self.full_dispatch_request()
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/flask/app.py", line 1825, in full_dispatch_request
Aug 26 07:21:35 AM rv = self.handle_user_exception(e)
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/flask/app.py", line 1823, in full_dispatch_request
Aug 26 07:21:35 AM rv = self.dispatch_request()
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/flask/app.py", line 1799, in dispatch_request
Aug 26 07:21:35 AM return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/dash/dash.py", line 1264, in dispatch
Aug 26 07:21:35 AM ctx.run(
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/dash/_callback.py", line 437, in add_context
Aug 26 07:21:35 AM output_value = func(*func_args, **func_kwargs) # %% callback invoked %%
Aug 26 07:21:35 AM File "/opt/render/project/src/src/app.py", line 153, in update_output
Aug 26 07:21:35 AM myAWSIoTMQTTClient.subscribe(wincc_Level_Tag, 1, customCallback)
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/AWSIoTPythonSDK/MQTTLib.py", line 703, in subscribe
Aug 26 07:21:35 AM return self._mqtt_core.subscribe(topic, QoS, callback)
Aug 26 07:21:35 AM File "/opt/render/project/src/.venv/lib/python3.10/site-packages/AWSIoTPythonSDK/core/protocol/mqtt_core.py", line 306, in subscribe
Aug 26 07:21:35 AM raise subscribeTimeoutException()