Fatal error: Trait 'BootstrapUI\View\UIViewTrait' not found in /home/users/luna/www/dev-energierebell-de/src/View/AppView.php on line 8

Fatal error: [Error] Call to undefined method App\View\AppView::initializeUI() #0 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/View/View.php(373): App\View\AppView->initialize() #1 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/View/ViewBuilder.php(726): Cake\View\View->__construct(Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Event\EventManager), Array) #2 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/View/ViewVarsTrait.php(126): Cake\View\ViewBuilder->build(Array, Object(Cake\Http\ServerRequest), Object(Cake\Http\Response), Object(Cake\Event\EventManager)) #3 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/Controller/Controller.php(794): Cake\Controller\Controller->createView() #4 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/Error/ExceptionRenderer.php(369): Cake\Controller\Controller->render('fatalError') #5 /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/Erro in /home/users/luna/www/dev-energierebell-de/vendor/cakephp/cakephp/src/Error/ErrorHandler.php on line 180