xain_sdk.http.ApiError

[sagar-equinix]

2020-07-01 00:44:35.378 INFO     >>> GET http://ec2-ip:8081/rendez_vous
2020-07-01 00:44:35.390 INFO     <<< GET http://ec2-ip:8081/rendez_vous [200]
2020-07-01 00:44:35.390 DEBUG    content-type: application/json
2020-07-01 00:44:35.390 DEBUG    content-length: 22
2020-07-01 00:44:35.391 DEBUG    date: Wed, 01 Jul 2020 00:44:35 GMT
2020-07-01 00:44:35.391 INFO     {
    "id": null,
    "ok": false
}
2020-07-01 00:44:35.392 DEBUG    heartbeat thread starting
2020-07-01 00:44:35.392 INFO     waiting for being selected
2020-07-01 00:44:35.393 INFO     >>> GET http://ec2-ip:8081/heartbeat/None
2020-07-01 00:44:35.402 WARNING  <<< GET http://ec2-ip:8081/heartbeat/None [404]
2020-07-01 00:44:35.402 DEBUG    content-length: 0
2020-07-01 00:44:35.402 DEBUG    date: Wed, 01 Jul 2020 00:44:35 GMT
2020-07-01 00:44:35.403 ERROR    error while sending heartbeat, exiting
Traceback (most recent call last):
  File "/home/xain-fl/python/sdk/xain_sdk/participant.py", line 227, in run
    self.heartbeat()
  File "/home/xain-fl/python/sdk/xain_sdk/participant.py", line 238, in heartbeat
    resp = self.coordinator_client.heartbeat()
  File "/home/xain-fl/python/sdk/xain_sdk/http.py", line 117, in heartbeat
    return json.loads(self.http.get(f"heartbeat/{self.id}").text)
  File "/home/xain-fl/python/sdk/xain_sdk/http.py", line 68, in get
    return self.send(req, status=status)
  File "/home/xain-fl/python/sdk/xain_sdk/http.py", line 84, in send
    self.check_response(resp, status=status)
  File "/home/xain-fl/python/sdk/xain_sdk/http.py", line 90, in check_response
    raise ApiError(resp)
xain_sdk.http.ApiError
2020-07-01 00:44:35.404 INFO     state changed: DONE

I am trying to run participant and coordinator on AWS instances. I am getting this api error when trying to run the participant.