yii\base\ErrorException#1
(
    [*:message] => 'Attempt to read property \"id\" on null'
    [Exception:string] => ''
    [*:code] => 2
    [*:file] => '/var/www/html/david/modules/shop/controllers/ShopController.php'
    [*:line] => 256
    [Exception:trace] => [
        0 => [
            'file' => '/var/www/html/david/modules/shop/controllers/ShopController.php'
            'line' => 256
            'function' => 'handleError'
            'class' => 'yii\\base\\ErrorHandler'
            'type' => '->'
        ]
        1 => [
            'function' => 'actionCollections'
            'class' => 'app\\modules\\shop\\controllers\\ShopController'
            'type' => '->'
        ]
        2 => [
            'file' => '/var/www/html/david/vendor/yiisoft/yii2/base/InlineAction.php'
            'line' => 57
            'function' => 'call_user_func_array'
        ]
        3 => [
            'file' => '/var/www/html/david/vendor/yiisoft/yii2/base/Controller.php'
            'line' => 178
            'function' => 'runWithParams'
            'class' => 'yii\\base\\InlineAction'
            'type' => '->'
        ]
        4 => [
            'file' => '/var/www/html/david/vendor/yiisoft/yii2/base/Module.php'
            'line' => 552
            'function' => 'runAction'
            'class' => 'yii\\base\\Controller'
            'type' => '->'
        ]
        5 => [
            'file' => '/var/www/html/david/vendor/yiisoft/yii2/web/Application.php'
            'line' => 103
            'function' => 'runAction'
            'class' => 'yii\\base\\Module'
            'type' => '->'
        ]
        6 => [
            'file' => '/var/www/html/david/vendor/yiisoft/yii2/base/Application.php'
            'line' => 384
            'function' => 'handleRequest'
            'class' => 'yii\\web\\Application'
            'type' => '->'
        ]
        7 => [
            'file' => '/var/www/html/david/web/index.php'
            'line' => 13
            'function' => 'run'
            'class' => 'yii\\base\\Application'
            'type' => '->'
        ]
    ]
    [Exception:previous] => null
    [*:severity] => 2
)