SSLv3 handshake failure

[Stunje]

I have an activated ami in AWS (one of Bitnami's ficus 3.1) and also created an external grader using AWS Lambda function. The problem comes when I try to submit a file for grading. This error shows up:
Could not connect to server at _Lambda-URL_ in timeout=30.000000 ERROR 21427 [queue.consumer] consumer.py:440 - Submission 528 to grader _Lambda-URL_ failure: Reply: cannot connect to server
Now I changed the consumer.py file a bit to log the actual error and this is what i got:
ERROR 21427 [queue.consumer] consumer.py:196 - [SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl.c:661)