OIDC redirect error

I’ve set up a connection with an Oidc Connect provider. When I log into vault, I get the login screen, enter my credentials but then get this error

error=“invalid_grant”, error_description=“A redirect_uri can only be used by implicit or authorization_code grant types.”

I’m presuming that my grant_type in the request is wrong - but how / where do I change that ? I can’t find any docs referring to the grant_type


bump - does anyone have any ideas on what to do here ? I’ve tried changing the response mode and response type to no avail :frowning: