import { startStimulusApp } from '@symfony/stimulus-bundle';

const app = startStimulusApp();
// register any custom, 3rd party controllers here
// app.register('some_controller_name', SomeImportedController);
<br />
<b>Fatal error</b>:  Uncaught TypeError: Invalid return value: callable object expected, &quot;int&quot; returned from &quot;/var/www/html/public/assets/stimulus_bootstrap-xCO4u8H.js&quot;. in /var/www/html/vendor/autoload_runtime.php:12
Stack trace:
#0 /var/www/html/public/index.php(5): require_once()
#1 {main}
  thrown in <b>/var/www/html/vendor/autoload_runtime.php</b> on line <b>12</b><br />