Issue #3190511 by DuneBL: Trying to access array offset on value of type bool...

Issue #3190511 by DuneBL: Trying to access array offset on value of type bool in Drupal\message_subscribe\Subscribers->sendMessage() 

src/Subscribers.php

@@ -245,7 +245,7 @@ class Subscribers implements SubscribersInterface {
         ]);
 
         // Check we didn't timeout.
-        if ($use_queue && $subscribe_options['queue']['end time'] && time() < $subscribe_options['queue']['end time']) {
+        if ($use_queue && $subscribe_options['end time'] && time() < $subscribe_options['end time']) {
           continue 2;
         }
       }