Can't run Blazor wasm startproject

[VervaekeSofie]

I'm new with blazor wasm.
I created a project with Visual Studio Community and build it.
Then I want to Run it, but that went wrong. I tried it with Google chrome and Edge, the same error is generated.
The error is: Error: Failed to start platform. Reason: TypeError: Failed to fetch
at At (https://localhost:7292/_framework/blazor.webassembly.js:1:59617) {stack: 'Error: Failed to start platform. Reason: Type…292/_framework/blazor.webassembly.js:1:59617)', message: 'Failed to start platform. Reason: TypeError: Failed to fetch'}

I tried it also with Visual Code and the same happend. I work with Windows 11. Is there something not installed?
If I make a Blazor Server app, I can run it.

[LeaFrock]

Looks like a NotFound problem. Check the index.html first.

For example, if you're hosting the wasm app behind a gateway, you need to change <base href="/" /> to <base href="/xxx/" /> so that all js/css files are accessable.

[VervaekeSofie]

Do you mean like this?

of like this?

Both changes gives me the same problem

[LeaFrock]

No... I just put up an example. There would be different kinds of reasons on your problem.

I suggest you upload and share a mini repo so that others can do help.