Argument 3 passed to Vendor\\Customer\\Plugin\\EmailNotificationPlugin::aroundnewAccount()

Question

Is anything missing in below code?

<?php

namespace Vendor\Customer\Plugin;

class EmailNotificationPlugin
{
   public function aroundnewAccount(
        \Magento\Customer\Model\EmailNotification $subject,        
        \Closure $proceed,        
        \Magento\Customer\Model\CustomerInterface $customer,
        $type = self::NEW_ACCOUNT_EMAIL_REGISTERED,
        $backUrl = '',
        $storeId = null,
        $sendemailStoreId = null
    ) {
        echo'return'; exit;
        return ;     
    }
}

Answer 1

Looking at the Magento Core code, this class doesn't exist \Magento\Customer\Model\CustomerInterface

You can use \Magento\Customer\Api\CustomerRepositoryInterface class instead, depends what you want to achieve.

The correct path for the class you are looking for should be: \Magento\Customer\Api\Data\CustomerInterface

Also make sure your method name to be camelCase

aroundNewAccount

Your code should look like this:

namespace Vendor\Customer\Plugin;

class EmailNotificationPlugin
{
   public function aroundNewAccount(
        \Magento\Customer\Model\EmailNotification $subject,        
        \Closure $proceed,        
        \Magento\Customer\Api\Data\CustomerInterface $customer,
        $type = self::NEW_ACCOUNT_EMAIL_REGISTERED,
        $backUrl = '',
        $storeId = null,
        $sendemailStoreId = null
    ) {
        echo'return'; exit;
        return ;     
    }
}

Answer 2

Try this:

<?php

namespace Vendor\Customer\Plugin;

class EmailNotificationPlugin
{
   public function aroundNewAccount(
        \Magento\Customer\Model\EmailNotification $subject,        
        \Closure $proceed,        
        $customer,
        $type,
        $backUrl
        $storeId
        $sendemailStoreId
    ) {
        echo'return'; exit;
        return ;     
    }
}