Bundler could not find compatible versions for gem "jquery-ui-rails":
In snapshot (Gemfile.lock):
jquery-ui-rails (= 6.0.1)
In Gemfile:
jquery-ui-rails
active_admin-sortable_tree was resolved to 0.3.0, which depends on
jquery-ui-rails (~> 5.0)
Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.