Kartik GridView not found issue

Error Class 'kartik\grid\GridView' not found

Kartik GridView Error

Törölni a Kartik-ot

$ php composer.phar remove kartik-v/yii2-widgets "*"

Installálni a Kartik-ot

$ php composer.phar require kartik-v/yii2-widgets "*" $ php composer.phar require kartik-v/yii2-grid "dev-master"

Előforduó hibák újratelepítés után:

Failed to instantiate component or class "lajax\languagepicker\Component".
$ php composer.phar require --prefer-dist lajax/yii2-language-picker "1.*"

Class 'yii\bootstrap4\Breadcrumbs' not found
$ php composer.phar require --prefer-dist yiisoft/yii2-bootstrap4