Alertify in Laravel in hosting

they could help me, I have a project in Laravel, everything works correctly in Localhost, but now that it is in the service the alertify do not work and do not let the view return, if I delete the alertify everything works fine (the sql lines, the boostrap, the routes, everything works fine without the alertify)

//this is one of the functions with Alertify but they do not work as explained above
public function create(CreateUserRequest $request)
{
    $user = new User($request->all());
    $user->password = bcrypt($request->get('password'));
    $user->save();

    alertify()->success('USER ' . $user->name . ' CREATED.')->position('bottom right')->delay(6000);
    return redirect()->route('users_path');
}

via Chebli Mohamed