An Unhandled exception occurred while processing the request (NHS login)

Hi Everyone,

We are encountering error in sandpit environment for NHS login integration, can anyone help? I have attached a video (error occurs at the end) and an image of the error.

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Hi Chris. Please can you post the text of the error? Thanks

OpenIdConnectProtocolException: Message contains error: ‘invalid_request’, error_description: ‘error_description is null’, error_uri: ‘error_uri is null’.
Microsoft.AspNetCore.Authentication.OpenIdConnect.OpenIdConnectHandler.RedeemAuthorizationCodeAsync(OpenIdConnectMessage tokenEndpointRequest)

Exception: An error was encountered while handling the remote login.