URL getting block

Hi team, I am new on the Zscaler portal please help with the below error send by client machine.
The below URL is not working fine. Please find the attached snapshot.

Access is denied due to bad certificate also We found a security threat.
As per my knowledge the server used the old cert so i will bypass it so can you please tell me the troubleshooting steps for bypass the URL.

I’d love to help, but I unfortunately don’t see a URL or an attachment.