I'm trying to set up an observer that sends an email to the admin when a user registers on the website. I am following a tutorial but have hit a dead end. The observer is working correctly however I am getting this error in the browser:

Type Error occurred when creating object: Ubr\NotifyEmail\Observer\SendMailToAdmin

And this error in system.log:

[2019-03-12 07:21:11] main.CRITICAL: Type Error occurred when creating object: Ubr\NotifyEmail\Observer\SendMailToAdmin, Argument 1 passed to Ubr\NotifyEmail\Observer\SendMailToAdmin::__construct() must be an instance of Magento\Framework\Mail\Template\TransportBuilder, instance of Magento\Customer\Model\ResourceModel\CustomerRepository\Interceptor given, called in /home/ubuildro/public_html/mag/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php on line 116 [] []

Here is my events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="customer_register_success">
        <observer name="sendmail_toadmin" instance="Ubr\NotifyEmail\Observer\SendMailToAdmin"/>

And my SendMailToAdmin.php


namespace Ubr\NotifyEmail\Observer;

use Magento\Framework\Event\ObserverInterface;

class SendMailToAdmin implements ObserverInterface

    const XML_PATH_EMAIL_RECIPIENT = 'trans_email/ident_general/email';
    protected $_transportBuilder;
    protected $inlineTranslation;
    protected $scopeConfig;
    protected $storeManager;
    protected $_escaper;

    public function __construct(
        \Magento\Framework\Mail\Template\TransportBuilder $transportBuilder,
        \Magento\Framework\Translate\Inline\StateInterface $inlineTranslation,
        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\Escaper $escaper
    ) {
        $this->_transportBuilder = $transportBuilder;
        $this->inlineTranslation = $inlineTranslation;
        $this->scopeConfig = $scopeConfig;
        $this->storeManager = $storeManager;
        $this->_escaper = $escaper;

    public function execute(\Magento\Framework\Event\Observer $observer)

        $customer = $observer->getData('customer');

            $error = false;

            $sender = [
                'name' => $this->_escaper->escapeHtml($customer->getFirstName()),
                'email' => $this->_escaper->escapeHtml($customer->getEmail()),
            $postObject = new \Magento\Framework\DataObject();
            $storeScope = \Magento\Store\Model\ScopeInterface::SCOPE_STORE; 
            $transport = 
                ->setTemplateIdentifier('3') // Send the ID of Email template which is created in Admin panel
                    ['area' => \Magento\Framework\App\Area::AREA_FRONTEND, // using frontend area to get the template file
                    'store' => \Magento\Store\Model\Store::DEFAULT_STORE_ID,]
                ->setTemplateVars(['data' => $postObject])
                ->addTo($this->scopeConfig->getValue(self::XML_PATH_EMAIL_RECIPIENT, $storeScope))
            $transport->sendMessage(); ;

        catch (\Exception $e) 




Like I said the observer is working correctly so the error is occuring in SendMailToAdmin.php please help.

1 Answer 1


i have get the reference URL for your solution... please look at this


in Your Observer you need to replace

setTemplateVars(['post' => $postObject])


 setTemplateVars(['customer' => $postObject])

for send the customer name and email Id to mail.

Let me know if it's work for you.

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