SocketException: Es konnte keine Verbindung hergestellt werden, da der Zielcomputer dies aktiv abgelehnt hat. Erhalten d ⇐ C#

[Anonymous]

Während der Verarbeitung der Anfrage ist eine nicht behandelte Ausnahme aufgetreten.
Ich erhalte diese Fehlermeldung jedes Mal, wenn ich meine Anwendung in Visual Studio ausführe

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An unhandled exception occurred while processing the request.
SocketException: No connection could be made because the target machine actively refused it.
System.Net.Sockets.Socket+AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)

HttpRequestException: No connection could be made because the target machine actively refused it. (localhost:53797)
System.Net.Http.ConnectHelper.ConnectAsync(Func callback, DnsEndPoint endPoint, HttpRequestMessage requestMessage, CancellationToken cancellationToken)

HttpRequestException: Failed to proxy the request to http://localhost:53797/, because the request to the proxy target failed. Check that the proxy target server is running and accepting requests to http://localhost:53797/.

The underlying exception message was 'No connection could be made because the target machine actively refused it. (localhost:53797)'.Check the InnerException for more details.
Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.PerformProxyRequest(HttpContext context, HttpClient httpClient, Task baseUriTask, CancellationToken applicationStoppingToken, bool proxy404s)