js.map File

I get this warning

Source-Map-Fehler: Error: request failed with status 404
Ressourcen-Adresse: http://localhost:8000/LarsTool19Web/LarsTool19Web.js
Source-Map-Adresse: LarsTool19Web.js.map

But I can't find a ".map" file in the "...\TMSWeb\Release" directory.
How can I generate the file.

When building for release mode, the map file does not exist. Only when building for debug mode. Alternatively, you can change the release mode settings in your project by setting the Debug Information flag to true: