The request message was already sent. Cannot send the same request message multiple times.

[clarity99]

with beta-3 when trying to login commit the exception is thrown:
The request message was already sent. Cannot send the same request message multiple times.

System.InvalidOperationException: The request message was already sent. Cannot send the same request message multiple times.
         at System.Net.Http.HttpClient.CheckRequestMessage(HttpRequestMessage request)
         at System.Net.Http.HttpClient.CheckRequestBeforeSend(HttpRequestMessage request)
         at System.Net.Http.HttpClient.SendAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
         at Passwordless.PasswordlessHttpHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) in /Users/robertivanc/src/passwordless-dotnet/src/Passwordless/PasswordlessHttpHandler.cs:line 22
         at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
         at Passwordless.PasswordlessClient.VerifyTokenAsync(String verifyToken, CancellationToken cancellationToken) in /Users/robertivanc/src/passwordless-dotnet/src/Passwordless/PasswordlessClient.cs:line 83
         at Passwordless.AspNetCore.Services.Implementations.PasswordlessService`2.LoginUserAsync(PasswordlessLoginRequest loginRequest, CancellationToken cancellationToken) in /Users/robertivanc/src/passwordless-dotnet/src/Passwordless.AspNetCore/Services/Implementations/PasswordlessService.cs:line 200
         at Passwordless.AspNetCore.PasswordlessApiEndpointRouteBuilderExtensions.<MapPasswordless>g__PasswordlessLogin|3_1[TRegisterBody](PasswordlessLoginRequest loginRequest, IPasswordlessService`1 passwordlessService, CancellationToken cancellationToken) in /Users/robertivanc/src/passwordless-dotnet/src/Passwordless.AspNetCore/PasswordlessApiEndpointRouteBuilderExtensions.cs:line 69
         at Microsoft.AspNetCore.Http.RequestDelegateFactory.ExecuteTaskResult[T](Task`1 task, HttpContext httpContext)
         at Microsoft.AspNetCore.Http.RequestDelegateFactory.<>c__DisplayClass90_2.<<HandleRequestBodyAndCompileRequestDelegateForJson>b__2>d.MoveNext()
      --- End of stack trace from previous location ---
         at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)

to reproduce clone this repo, commit
#41b2f46b62869bab699885979eae1cf6594bf25e and run AspNetIdentity.example, when logging in or registering on gets this error.