Add secret token to dummy app
user
```ruby
# Be sure to restart your server when you modify this file.

# Your secret key is used for verifying the integrity of signed cookies.
# If you change this key, all old signed cookies will become invalid!

# Make sure the secret is at least 30 characters and all random,
# no regular words or you'll be exposed to dictionary attacks.
# You can use `rake secret` to generate a secure secret key.

# Make sure your secret_key_base is kept private
# if you're sharing your code publicly.
Dummy::Application.config.secret_key_base = 'c9832b214b2e489d79731521da928724c08c03575b93b6f871b339fd047b0d69b84dfcab15ea1b7c94ad1d34284d333d19690a45b7a60a7d297d47edcf816de0'
```
assistant