MC-18193: All Sales emails are being copied to the same customer when sales_emails cron has an error

Author: rostyslav-hymon

lib/internal/Magento/Framework/Mail/Template/TransportBuilder.php

@@ -261,8 +261,13 @@ public function setTemplateOptions($templateOptions)
      */
     public function getTransport()
     {
-        $this->prepareMessage();
-        $mailTransport = $this->mailTransportFactory->create(['message' => clone $this->message]);
+        try {
+            $this->prepareMessage();
+            $mailTransport = $this->mailTransportFactory->create(['message' => clone $this->message]);
+        } catch (LocalizedException $e) {
+            $this->reset();
+            throw $e;
+        }
         $this->reset();
 
         return $mailTransport;