Missing `secret_token` and `secret_key_base` for 'development' environment, set these values in `config/secrets.yml`

Then create one:

config/secrets.yml

# be sure to restart your server when you modify this file...
# Make sure the secret is at least 30 characters and all random,
# no regular words or you'll be exposed to dictionary attacks.
development:
  secret_key_base:  asdflkjasdlfkjasldfkj

test:
  secret_key_base:  asdflkhasldfhlhaskdlflakhsdf

production:
  secret_key_base: 523lk5h2lkjlj6nlk4n6lk4

obviously don't use those keys above ^ just mash on your keyboard, or use rake secret to generate one :)

You skipped one installation step.

For Redmine 2 and 3 versions, type:

RAILS_ENV=production bundle exec rake generate_secret_token