fix

Author: taylorotwell

src/Illuminate/Database/Eloquent/Collection.php

@@ -557,7 +557,13 @@ public function getQueueableIds()
      */
     public function getQueueableRelations()
     {
-        return $this->isEmpty() ? [] : array_intersect(...$this->map->getQueueableRelations()->all());
+        if ($this->isEmpty()) {
+            return [];
+        }
+
+        $relations = $this->map->getQueueableRelations()->all();
+
+        return count($relations) <= 1 ? $relations : array_intersect(...$relations);
     }
 
     /**