Failed all tests with Capybara error log on Travis-CI.
Error log is like following:
1) Error:
RedmineAutoAssignGroup::UsersTest#test_auto_assign_group_when_user_is_added:
LoadError: Capybara is unable to load `puma` for its server, please add `puma` to your project or specify a different server via something like `Capybara.server = :webrick`.
Failed all tests with Capybara error log on Travis-CI. Error log is like following:
Its caused after using Capybara 3.0.3.