I am running Models Builder in Umbraco 8.17.1. It is, I believe, in API mode. We have a Models project, in which we use the custom tool in Visual Studio to update the models, which are generated.cs files.

Our setup in config is as follows:

  <add key="Umbraco.ModelsBuilder.Enable" value="true" />
  <add key="Umbraco.ModelsBuilder.ModelsMode" value="" />
  <add key="Umbraco.ModelsBuilder.EnableApi" value="true" />

The custom tool has been failing today. The error is:

UmbracoModelsBuilder: Starting v8.0.5 1/31/2023 11:12:15 AM. UmbracoModelsBuilder: UmbracoModelsBuilder failed to generate code: Exception: Response status code does not indicate success (Redirect)

UmbracoModelsBuilder: at Umbraco.ModelsBuilder.Api.ApiClient.EnsureSuccess(HttpResponseMessage result) at Umbraco.ModelsBuilder.Api.ApiClient.GetModels(Dictionary`2 ourFiles, String modelsNamespace) at Umbraco.ModelsBuilder.CustomTool.CustomTool.UmbracoModelsBuilder.GenerateRaw(String wszInputFilePath, String wszDefaultNamespace, IntPtr[] rgbOutputFileContents, UInt32& pcbOutput, String& errMsg)

Looking through the Models Builder code from GitHub, this seems to indicate that calling the Get Models endpoint in the ModelsBuilderAPI in the Umbraco backoffice returns some type of 300 status code. The Umbraco Website that we have registered with Visual Studio is running and I am able to access the backoffice with no trouble.

Does anyone know what this return value from the API endpoint might indicate?

Thanks for any help.

Angus