When users click logout, I'm redirecting them to "/Shibboleth.sso/Logout"
This successfully brings them to the Microsoft logout page, then they get redirected back to the SP.
However, as they return to the SP they get a SOAP error message.
opensaml::BindingException
The system encountered an error at Wed Sep 30 19:13:08 2020
To report this problem, please contact the site administrator at help@example.com.
Please include the following message in any email:
opensaml::BindingException at (https://app/Shibboleth.sso/SLO/SOAP)
Invalid content type for SOAP message.