I have made some changes to the master.js fil. But the master.js fil will not get minified into master.min.js. I'm currently doing the changes directly in the administration panel. Am I missing a setting somewhere?
Are you using Visual studio? If so, we use an extension called "Bundler and minifier" https://marketplace.visualstudio.com/items?itemName=MadsKristensen.BundlerMinifier
You can use the attached configuration to use the same setup as we do.