The type or namespace name 'App' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'App' could not be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/setup-dotnet@v2. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Possible null reference argument for parameter 'Namespace' in 'PromptTmpl.PromptTmpl(string Namespace, string Name, string Tmpl, string BaseClass, string[] ConfigValues)'.