routines:ssl3_check_cert_and_algorithm:dh key too small

Hi,

I'm using Nginx as reverse proxy, recently upgraded the OpenSSL package on Nginx server, post that application is not working. Getting Bad Gateway and in the log I'm getting the below error. Can someone help me what would be the issue.


nginx version: nginx/1.12.0

openssl-1.0.2k-8.0.1.el7.x86_64

=========
SSL_do_handshake() failed (SSL: error:14082174:SSL routines:ssl3_check_cert_and_algorithm:dh key too small) while SSL handshaking to upstream
=========

Thanks,
SK