Unhandled exception when clicking 'Cancel' on the IS4 login page

[Ihavenowand]

Navigating to a protected route i.e /Home/Privacy redirects to IS4 login page. Clicking the cancel button results in an unhandled exception

OpenIdConnectProtocolException: Message contains error: 'access_denied', error_description: 'error_description is null', error_uri: 'error_uri is null'.

Exception: An error was encountered while handling the remote login.
Microsoft.AspNetCore.Authentication.RemoteAuthenticationHandler.HandleRequestAsync()
Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)