Adding third party packages

Those are PHP packages, they should not affect client side. You probably have PHP errors (possibly PHP version issues) so the outputted HTML is malformed and therefore the client side JavaScripts are affected. You should:

  1. Install PHP packages by Tools → Composer packages, (no need to install “firebase/php-jwt” yourself as it is used by PHPMaker already)
  2. Press F12 in your browser and go to the Console panel check for client side JavaScript error.
  3. Enable debug and check the log files for server side erors, also see check HTTP response.