Error Code:

Error Code	750054
Message	SAMLRequest or SAMLResponse must be present as query string parameters in HTTP request for SAML Redirect binding.
Remediation	Azure AD wasn't able to identify the SAML request within the URL parameters in the HTTP request. This can happen if the application is not using HTTP Redirect Binding for sending the SAML request to Azure AD. The application needs to send the SAML request encoded into the location header using HTTP Redirect Binding. For more information about how to implement it, read the section HTTP Redirect Binding in the SAML protocol specification document.[https://docs.oasis-open.org/security/saml/v2.0/saml-bindings-2.0-os.pdf]