getting this error

    File:   /chroot/home/html/vendor/magento/framework/App/State.php     Error:  Area code is not set     Line:   139     Stack trace:     #0 /chroot/home/html/vendor/magento/module-theme/Model/View/Design.php(126): Magento\Framework\App\State->getAreaCode()     #1 /chroot/home/html/var/generation/Magento/Theme/Model/View/Design/Proxy.php(103): Magento\Theme\Model\View\Design->getArea()     #2 /chroot/home/html/vendor/magento/module-email/Model/AbstractTemplate.php(584): Magento\Theme\Model\View\Design\Proxy->getArea()     #3 /chroot/home/html/vendor/magento/module-email/Model/AbstractTemplate.php(608): Magento\Email\Model\AbstractTemplate->getDesignConfig()     #4 /chroot/home/html/vendor/magento/module-email/Model/Template.php(413): Magento\Email\Model\AbstractTemplate->setDesignConfig(Array)     #5 /chroot/home/html/vendor/magento/framework/Mail/Template/TransportBuilder.php(257): Magento\Email\Model\Template->setOptions(Array)     #6 /chroot/home/html/vendor/magento/framework/Mail/Template/TransportBuilder.php(267): Magento\Framework\Mail\Template\TransportBuilder->getTemplate()     #7 /chroot/home/html/vendor/magento/framework/Mail/Template/TransportBuilder.php(227): Magento\Framework\Mail\Template\TransportBuilder->prepareMessage()     #8 /chroot/home/html/vendor/magento/module-sales/Model/Order/Email/SenderBuilder.php(66): Magento\Framework\Mail\Template\TransportBuilder->getTransport()     #9 /chroot/home/html/vendor/magento/module-sales/Model/Order/Email/NotifySender.php(34): Magento\Sales\Model\Order\Email\SenderBuilder->send()     #10 /chroot/home/html/app/code/Bss/OrderDeliveryDate/Model/Plugin/Sales/Order/Email/Sender/OrderCommentSender.php(46): Magento\Sales\Model\Order\Email\NotifySender->checkAndSend(Object(Magento\Sales\Model\Order), true)     #11 /chroot/home/html/pub/test.php(203): Bss\OrderDeliveryDate\Model\Plugin\Sales\Order\Email\Sender\OrderCommentSender->send(Object(Magento\Sales\Model\Order), true, '123456+SWOG')     #12 /chroot/home/html/pub/test.php(355): Data->updateOrder('000001469', '2018-3-15', 'Complete', 'complete', 'yes', '123456', 'SWOG', 'SWOG')     #13 {main} 

when running this:

$  objectManager = \Magento\Framework\App\ObjectManager::getInstance();  $  order = $  objectManager->create('\Magento\Sales\Model\Order')->loadByIncrementId($  orderIncId); $  state =  $  objectManager->create('\Magento\Framework\App\State'); $  state->setAreaCode('frontend'); $  notificationEmail = $  objectManager->create('Magento\Sales\Model\Order\Email\Sender\OrderCommentSender'); $  notificationEmail->send($  order, true, "Order Completed!"); 

i can’t figure out what i missing, i am setting the area code but it doesn’t seem to see that