CUCM 12.5 saml linking http 500 error.

[heaventerran1]

Hello.

The current CUCM(IMP) version is 12.5.1.10000-22.

It consists of one CUCM publisher and one IMP publisher.

CUCM and CLOUD SSO integration is in progress.
In the process of SAML enable test, http 500 error occurs.

Why does http 500 error occur when testing?

Can I check?

Thanks.