refs #42663, fixes sometime mailing job doesn't mark delivered and se…

…nd duplicate email to recipients

CRM/Mailing/BAO/Job.php

@@ -595,6 +595,20 @@ public function deliverGroup(&$fields, &$mailing, &$mailer, &$job_date, &$attach
         FALSE, NULL, $replyToEmail
       );
 
+      // handling compose failing
+      if (empty($message) || !is_object($message) || !is_a($message, 'Mail_mime')) {
+        CRM_Core_Error::debug_log_message("Failed to compose message for queue: {$field['id']}, contact {$field['contact_id']}, email {$field['email']}");
+        $params = array(
+          'event_queue_id' => $field['id'],
+          'job_id' => $this->id,
+          'hash' => $field['hash'],
+        );
+        $params = array_merge($params, CRM_Mailing_BAO_BouncePattern::match('Mailing compose system error, check system log for detail.'));
+        CRM_Mailing_Event_BAO_Bounce::create($params);
+
+        continue;
+      }
+
       /* Send the mailing */
       $body = &$message->get();
       $headers = &$message->headers();