This problem has been solved with your help.
I sincerely appreciate your help.
This case is closed because this request has been resolved.
Thank you very much.
Posted at Nginx Forum:
https://forum.nginx.org/read.php?2,273879,273902#msg-273902
___
There is an incorrect syntax to fix.
I have registered p12 certificate and ca certificate in my Firefox browser,
but I get "400 Bad Request".
==> I have registered client.p12 and ca.crt file in my Firefox browser, but
I get "400 Bad Request".
Posted at Nginx Forum: