>gem -v
2.6.14
>gem install bundler
>gem update --system
>gem -v
2.7.7
>gem install redmine_extensions
>gem list
redmine_extensions (0.2.12)
>bundle install --no-deployment
Using redmine_extensions 0.2.12
>bundle exec rake db:migrate RAILS_ENV=production
>bundle exec rake redmine:plugins:migrate RAILS_EN
V=production
Migrating easy_gantt (Easy Gantt plugin)...
== 20170213152215 AddDefaultPrintableTemplate: migrating ======================
== 20170213152215 AddDefaultPrintableTemplate: migrated (0.0000s) =============

== 20170224134615 UpdateRestApiSettings: migrating ============================
== 20170224134615 UpdateRestApiSettings: migrated (0.0145s) ===================

Migrating view_customize (View Customize plugin)...