You have already activated rack 1.6.0, but your Gemfile requires rack 1.6.4

Question

Similar to problem with rack 1.3.2. You have already activated rack 1.3.2, but your Gemfile requires rack 1.2.3 -- I\'m experiencing You have already activated rack 1.6.0,

Answer 1

One experienced Rails developer highly recommends using binstubs. Have it installed by:

bundle install --binstubs

and run it via relative path:

./bin/rails server

or what is most recommended update PATH and forget about bundler issues:

export PATH="./bin:$PATH"
rails server