Unable to configure SAML on github

[Prettylee97]

Unable to enable SAML in github for SSO configuration.

I'm trying to use github as a service provider and enable SSO, and when asked for X.509 certificate I've pasted the data I got from IDP but it's saying invalid and paste it in valid X.509 Certificate format, the format I have pasted is the X.509 certificate data itself. I don't understand where it's going wrong.

Can someone please help me solve this issue, for a successful SAML Test?