Heroku new action not working

[mumble-07]

PING Need Help!

Hello, I deployed my latest project in Heroku. All actions are functional in my localhost, but when I tried it on Heroku app, my create new category is not working.

Upon checking logs, it says unknown attribute user_id
I already run rails db:migrate to migrate my latest model, user.
I also added my heroku link inside the production.rb file

[mumble-07]

FIXED--> after running rails db:migrate you should restart heroku
run
heroku restart

https://stackoverflow.com/questions/33611604/heroku-rails-activerecordunknownattributeerror-unknown-attribute-user-id