#77

backend/app/controllers/nico_tags_controller.rb

@@ -34,7 +34,7 @@ class NicoTagsController < ApplicationController
 
     tag.linked_tags = linked_tags
     tag.updated_at = Time.now
-    tag.update!
+    tag.save!
 
     render json: tag.linked_tags, status: :ok
   end