Got error on Blazor Example project

Hello, Sir,
When I pull the code, and run the blazor example project,
(https://github.com/grpc/grpc-dotnet/blob/master/examples/Blazor/Client/Program.cs)

I got the following error When I click the start button of couter page:

Status(StatusCode="intemal", Detail="Error starting aRPC cal. HtpRequestException: TypeError. Failed to fetch JSExceptionTypeError. Failed to fetch", DebugException="System.Net.Http.HttpRequestException: TypeError. Failed to fetch"

Any ideas about this error?

Thanks.

Start with examples/Blazor/Client/Program.cs and run the Blazor example project. Reproduce the failure by clicking the Counter page's start button, then investigate the reported failed fetch error. Done means the cause is identified and the example no longer produces this error, or the required setup is documented.

Written by the indexing model from the issue text.