Ok, Here is the solution.
As my domain (example.com) is configured for port forwarding and It was mapping to my Local server
To Access my local server through example.com
It was like this:
http://example.com:1234/project_name
and i was configuring my local server for https
which was accessible as
https://192.168.**.***/project_name
But it was giving error (Invalid method in request \x16\x03\x01) for below url
https://example.com:1234/project_name
Because example.com was not configured for ssl.