Weblogic SSO integration with Azure AD is not working: "Request URI is not a service URI"

We are trying to implement user authentication (Weblogic Server) with Azure AD for RPAS. Request from weblogic is going on Azure AD, and user is authenticated and user id and group name is returned correct to Weblogic server. But browser is getting stuck in infinite loop.

As per weblogic server log, following error messages are present :

<getServiceTypeFromURI(): request URI is not a service URI>

<SP initiating authn request: partner id is null>

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Thanks,

Brijesh