An Error occurred while handling another error:
exception 'yii\web\HeadersAlreadySentException' with message 'Headers already sent in /home/knhotco35nv/public_html/frontend/components/MyController.php on line 29.' in /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Response.php:366
Stack trace:
#0 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Response.php(339): yii\web\Response->sendHeaders()
#1 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/ErrorHandler.php(135): yii\web\Response->send()
#2 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/ErrorHandler.php(111): yii\web\ErrorHandler->renderException(Object(yii\web\NotFoundHttpException))
#3 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\NotFoundHttpException))
#4 {main}
Previous exception:
exception 'yii\web\NotFoundHttpException' with message 'Không tìm thấy trang.' in /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Request.php:284
Stack trace:
#0 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Application.php(82): yii\web\Request->resolve()
#1 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest(Object(yii\web\Request))
#2 /home/knhotco35nv/public_html/frontend/web/index.php(17): yii\base\Application->run()
#3 {main}