If you have an Azure AD OIDC connection that is failing with the above error. Please make sure to double-check the below details:
1. When applying an SSO connection via OpenID Connect in the admin portal, you are requested to insert a `Secret Key`. When working with Azure AD as your IDP, please make sure to use 'Value' and not the 'Secret ID'.
2. Make sure that the email of the user is filled out, under the user's properties.