show and edit commands fail with "undefined method 'version' for nil:NilClass"

[jlfranklin]

Create worked fine, but then I couldn't show or edit the data bags.

$ knife -v
Chef: 12.14.60

Sanitized output follows:

$ knife solo --local-mode data bag edit my_project database -c ./solo.rb -VV
INFO: Using configuration from /path/to/project/solo.rb
INFO: Started chef-zero at chefzero://localhost:8889 with repository at /path/to/project
  One version per cookbook

/var/lib/gems/2.3.0/gems/knife-solo_data_bag-2.1.0/lib/chef/knife/solo_data_bag_edit.rb:32:in `run': undefined method `version' for nil:NilClass (NoMethodError)
	from /usr/lib/ruby/vendor_ruby/chef/knife.rb:430:in `block in run_with_pretty_exceptions'
	from /usr/lib/ruby/vendor_ruby/chef/local_mode.rb:44:in `with_server_connectivity'
	from /usr/lib/ruby/vendor_ruby/chef/knife.rb:429:in `run_with_pretty_exceptions'
	from /usr/lib/ruby/vendor_ruby/chef/knife.rb:219:in `run'
	from /usr/lib/ruby/vendor_ruby/chef/application/knife.rb:156:in `run'
	from /usr/bin/knife:25:in `<main>'

The solo.rb file sets some paths to be project-relative:

root = File.absolute_path(File.dirname(__FILE__))

file_cache_path '/var/chef/cache'
cookbook_path root + '/cookbooks'
environment_path root + '/environments'
data_bag_path root + '/data_bags'

This is using chef installed from the Debian stretch repos.

Commenting out the check in the solo_data_bag_edit.rb or solo_data_bag_show.rb "fixes" it.