title: Magento 2.3.3 Email Issue When Sending Email copy to multiple email
body: <p>I am facing issue in the email in magento2. this issue is only faced in Magento 2.3.3.</p>
  
  <p><strong>How to produce</strong></p>
  
  <p>Go to
     <strong>Store-> Configuration-> Sales-> Sales Emails -> Send Order Email Copy To   -> enter multiple comma separated emails</strong>.</p>
  
  <p>and change <strong>Send Order Email Copy Method</strong> BCC to separate Email</p>
  
  <p>Now open any order and click on send an email you will get an error in </p>
  
  <p><strong>TypeError: Argument 1 passed to Magento\Email\Model\Template\Interceptor::setVars() must be of the type array, null given, called in /var/www/vendor/magento/framework/Mail/Template/TransportBuilder.php on line 368</strong></p>
  
  <p>have any one faced or fixed it??</p>