Issue #1414412 by pillarsdotnet, MrHaroldA, droplet: Fixed Skip #conjunction...

Issue #1414412 by pillarsdotnet, MrHaroldA, droplet: Fixed Skip #conjunction key in __clone() method of core/includes/database/query.inc.

core/lib/Drupal/Core/Database/Query/Condition.php

@@ -260,7 +260,7 @@ public function __toString() {
   function __clone() {
     $this->changed = TRUE;
     foreach ($this->conditions as $key => $condition) {
-      if ($condition['field'] instanceOf ConditionInterface) {
+      if ($key !== '#conjunction' && $condition['field'] instanceOf ConditionInterface) {
         $this->conditions[$key]['field'] = clone($condition['field']);
       }
     }