I am facing the same issue as Not able to Authenticate through Swagger of Custom Module API #1121
2021-09-24 14:29:24.431 +00:00 [ERR] Invalid redirect_uri: https://fwateer.azurewebsites.net/swagger/oauth2-redirect.html {"ClientId":"eInvoicing_Swagger","ClientName":"eInvoicing_Swagger","RedirectUri":null,"AllowedRedirectUris":["https://localhost:44318/swagger/oauth2-redirect.html"],"SubjectId":"anonymous","ResponseType":null,"ResponseMode":null,"GrantType":null,"RequestedScopes":"","State":null,"UiLocales":null,"Nonce":null,"AuthenticationContextReferenceClasses":null,"DisplayMode":null,"PromptMode":"","MaxAge":null,"LoginHint":null,"SessionId":null,"Raw":{"response_type":"code","client_id":"eInvoicing_Swagger","redirect_uri":"https://fwateer.azurewebsites.net/swagger/oauth2-redirect.html","scope":"eInvoicing","state":"RnJpIFNlcCAyNCAyMDIxIDE2OjI5OjE3IEdNVCswMjAwIChFYXN0ZXJuIEV1cm9wZWFuIFN0YW5kYXJkIFRpbWUp"},"$type":"AuthorizeRequestValidationLog"} 2021-09-24 14:29:24.447 +00:00 [ERR] Request validation failed