I am receiving this error after filling in the config details (such as integration key and client secret) into the appsettings.example.json file. I downloaded Code-Examples-CSharp from the Docusign Github and was able to run the ISSExpresss in VS2019 and it takes me to http://localhost:8080/ and then I am receiving this error below. I don't think I am missing any other config areas, but I'm new to Docusign APIs so please let me know if I am.
An unhandled exception occurred while processing the request.
ArgumentException: The 'ClientId' option must be provided. (Parameter 'ClientId')
Microsoft.AspNetCore.Authentication.OAuth.OAuthOptions.Validate()
ArgumentException: The 'ClientId' option must be provided. (Parameter 'ClientId')
Microsoft.AspNetCore.Authentication.OAuth.OAuthOptions.Validate()
Microsoft.AspNetCore.Authentication.RemoteAuthenticationOptions.Validate(string scheme)
Microsoft.AspNetCore.Authentication.AuthenticationBuilder+<>c__DisplayClass4_0<TOptions, THandler>.b__1(TOptions o)
Microsoft.Extensions.Options.ValidateOptions.Validate(string name, TOptions options)
Microsoft.Extensions.Options.OptionsFactory.Create(string name)
Microsoft.Extensions.Options.OptionsMonitor+<>c__DisplayClass11_0.b__0()
System.Lazy.ViaFactory(LazyThreadSafetyMode mode)
System.Lazy.ExecutionAndPublication(LazyHelper executionAndPublication, bool useDefaultConstructor)
System.Lazy.CreateValue()
System.Lazy.get_Value()
Microsoft.Extensions.Options.OptionsCache.GetOrAdd(string name, Func createOptions)
Microsoft.Extensions.Options.OptionsMonitor.Get(string name)
Microsoft.AspNetCore.Authentication.AuthenticationHandler.InitializeAsync(AuthenticationScheme scheme, HttpContext context)
Microsoft.AspNetCore.Authentication.AuthenticationHandlerProvider.GetHandlerAsync(HttpContext context, string authenticationScheme) Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)