MQTT connection failure ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:720)

[itsharshgandhi-ub]

I am trying to connect to IoT using job-agent.py script. It is running fine on my MacBook as a IoT thing but it is throwing error on my Raspberry Pi as a thing. Can you help me out with this?

Error:

Traceback (most recent call last):
File "/home/pi/ruxin/jobAgent.py", line 194, in
myAWSIoTMQTTClient.connect()
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/MQTTLib.py", line 513, in connect
return self._mqtt_core.connect(keepAliveIntervalSecond)
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/mqtt_core.py", line 196, in connect
self.connect_async(keep_alive_sec, self._create_blocking_ack_callback(event))
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/mqtt_core.py", line 223, in connect_async
raise e
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/mqtt_core.py", line 211, in connect_async
rc = self._internal_async_client.connect(keep_alive_sec, ack_callback)
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/internal/clients.py", line 122, in connect
rc = self._paho_client.connect(host, port, keep_alive_sec)
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/paho/client.py", line 665, in connect
return self.reconnect()
File "/home/pi/.local/lib/python3.5/site-packages/AWSIoTPythonSDK/core/protocol/paho/client.py", line 826, in reconnect
ciphers=self._tls_ciphers)
File "/usr/lib/python3.5/ssl.py", line 1077, in wrap_socket
ciphers=ciphers)
File "/usr/lib/python3.5/ssl.py", line 760, in init
self.do_handshake()
File "/usr/lib/python3.5/ssl.py", line 996, in do_handshake
self._sslobj.do_handshake()
File "/usr/lib/python3.5/ssl.py", line 641, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:720)