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\base\ErrorException))
#3 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\base\ErrorException))
#4 {main}
Previous exception:
exception 'yii\base\ErrorException' with message 'session_start(): Cannot send session cookie - headers already sent by (output started at /home/knhotco35nv/public_html/frontend/components/MyController.php:29)' in /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Session.php:137
Stack trace:
#0 [internal function]: yii\base\ErrorHandler->handleError(2, 'session_start()...', '/home/knhotco35...', 137, Array)
#1 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Session.php(137): session_start()
#2 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Session.php(630): yii\web\Session->open()
#3 /home/knhotco35nv/public_html/vendor/devanych/yii2-cart/storage/SessionStorage.php(24): yii\web\Session->get('cart', Array)
#4 /home/knhotco35nv/public_html/vendor/devanych/yii2-cart/Cart.php(208): devanych\cart\storage\SessionStorage->load()
#5 /home/knhotco35nv/public_html/vendor/devanych/yii2-cart/Cart.php(163): devanych\cart\Cart->loadItems()
#6 /home/knhotco35nv/public_html/frontend/controllers/CartController.php(60): devanych\cart\Cart->getItem(426)
#7 [internal function]: frontend\controllers\CartController->actionAdd('426', '1')
#8 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#9 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams(Array)
#10 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/Module.php(528): yii\base\Controller->runAction('add', Array)
#11 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction('cart/add', Array)
#12 /home/knhotco35nv/public_html/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest(Object(yii\web\Request))
#13 /home/knhotco35nv/public_html/frontend/web/index.php(17): yii\base\Application->run()
#14 {main}