OpenSSL::Cipher::CipherError Rails 5.2

I looked at every possible solution regarding this error but nothing solved it.

Every time I try to upload an image, I receive that error.

In config/application.rb I have require 'active_storage/engine' uncommented.

In config/environments/development.rb I have config.active_storage.service = :local set up.

I ran rails active_storage:install and rails db:migrate.

The name of the model is user_test

class UserTest < ApplicationRecord
  has_one_attached :image
end

I have this in app/controllers/user_tests_controller.rb

def user_test_params
  params.require(:user_test).permit(:title, :caption, :image)
end 

**config/storage.yml*

test:
  service: Disk
  root: <%= Rails.root.join("tmp/storage") %>

local:
  service: Disk
  root: <%= Rails.root.join("storage") %>

I am really clueless as to why it isn't working.

Edit:

Completed 500 Internal Server Error in 111ms (ActiveRecord: 43.1ms)



    OpenSSL::Cipher::CipherError - :
      (erb):12:in `<main>'
      app/controllers/user_tests_controller.rb:27:in `create'

    Started POST "/__better_errors/52f33e5e173d5e27/variables" for 127.0.0.1 at 2019-01-10 14:02:17 -0600