Github action fails: Error in processing api build artifacts: the host.json file cannot specify a http.routePrefix value other than 'api'.

[gentledepp]

Describe the bug

A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Create new azure funciton project
2. change routePrefix in host.json file to empty string

3. Add some function that registers at the root:

    [FunctionName("redirector")]
       public static async Task<IActionResult> Run(
           [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "{*ignored}")] HttpRequest req,
           ILogger log)
       {
   
           var url = $"someotherscheme://{req.Host}{req.Path}{req.QueryString}";
   
           log.LogInformation($"Redirecting to {url}");
   
           return new RedirectResult(url);
       }

4. Deploy using github actions
5. See error

   Error in processing api build artifacts: the host.json file cannot specify a http.routePrefix value other than 'api'.

However, the docs state that this should be possible: https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-http-webhook-trigger?tabs=python-v2%2Cisolated-process%2Cnodejs-v4%2Cfunctionsv2&pivots=programming-language-csharp#customize-the-http-endpoint

Expected behavior Have ny

Screenshots If applicable, add screenshots to help explain your problem.

Device info (if applicable):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

[gentledepp]

Forget it. This was because I was following the tutorial:

which suggests adding a new funciton app using the VS Code extension which uses the deprecated model....