If you encounter error on SSL enabled sites in Firefox by your Cpanel server.
“The OCSP server suggests trying again later. (Error code: sec_error_ocsp_try_server_later)”
Login to your WHM with root access.
Go to ‘Service configuration’ > Apache Configuration > Include Editor
Go to Pre VirtualHost Include > select php version 2.4.xx > insert ‘SSLUseStapling off’ in the column > click Update
Click ‘Restart Apache’