Okta issue with OpenID

While Implementing Okta with open ID in Asp.net Form I am receiving following error ,any help pls .

“OpenIdConnectMessage.Error was not null, indicating an error. Error: ‘unsupported_response_type’. Error_Description (may be empty): ‘The response type is not supported by the authorization server. Configured response types: [code].’. Error_Uri (may be empty): ‘error_uri is null’.”

Do you know which OIDC flow you’re implementing? It sounds like it might be a hybrid flow so you would need to enable the Implicit (Hybrid) grant type in your Okta app settings (allow ID token and maybe access token).

Without allowing ID token and maybe access token ,can’t we access ?