PHP Notice 'yii\base\ErrorException' with message 'Trying to get property of non-object' in D:\www\zuanshixing\common\logic\GoodsLogic.php:49 Stack trace: #0 D:\www\zuanshixing\common\logic\GoodsLogic.php(49): yii\base\ErrorHandler->handleError(8, 'Trying to get p...', 'D:\\www\\zuanshix...', 49, Array) #1 D:\www\zuanshixing\frontend\controllers\GoodsController.php(106): common\logic\GoodsLogic::info('8884') #2 [internal function]: frontend\controllers\GoodsController->actionDetail('8884') #3 D:\www\zuanshixing\vendor\yiisoft\yii2\base\InlineAction.php(57): call_user_func_array(Array, Array) #4 D:\www\zuanshixing\vendor\yiisoft\yii2\base\Controller.php(157): yii\base\InlineAction->runWithParams(Array) #5 D:\www\zuanshixing\vendor\yiisoft\yii2\base\Module.php(528): yii\base\Controller->runAction('detail', Array) #6 D:\www\zuanshixing\vendor\yiisoft\yii2\web\Application.php(103): yii\base\Module->runAction('goods/detail', Array) #7 D:\www\zuanshixing\vendor\yiisoft\yii2\base\Application.php(386): yii\web\Application->handleRequest(Object(yii\web\Request)) #8 D:\www\zuanshixing\index.php(23): yii\base\Application->run() #9 {main}