Update Followable.php

Author: overtrue

src/Followable.php

@@ -219,7 +219,7 @@ public function attachFollowStatus($followables, callable $resolver = null)
             $followable = $resolver($followable);
 
             if (\in_array(Followable::class, \class_uses($followable))) {
-                $followable->setAttribute('has_followed', $followed->has($followable->getKey()));
+                $followable->setAttribute('has_followed', $followed->contains($followable->getKey()));
             }
         });