How to fix net::ERR_SSL_PROTOCOL_ERROR socket.io

Question

I have created socket application in sprintboot (backend) and angularjs (frontend) after deploying both over EC2 (AWS) I am getting net::ERR_SSL_PROTOCOL_ERROR error in my frontend. In backend I am getting - Blocked wrong request! url: /bad-request, ip: null

I am using netty-socket.io, and TimeMe.js library

Thanks in advance.