Can't use vaults

[jkerkmeester]

i get the following message when using a vault while running the nexus-cookbook:

Recipe Compile Error in /var/chef/cache/cookbooks/bkwi_build-server/recipes/default.rb

ChefVault::Exceptions::KeysNotFound

---

nexus_ssl_files/bkwi_ka_test_keys could not be found

Cookbook Trace:

---

/var/chef/cache/cookbooks/nexus/libraries/chef_nexus.rb:218:in `encrypted_data_bag_item'
/var/chef/cache/cookbooks/nexus/libraries/chef_nexus.rb:203:in `encrypted_data_bag_for'
/var/chef/cache/cookbooks/nexus/libraries/chef_nexus.rb:67:in `get_ssl_files_data_bag'
/var/chef/cache/cookbooks/nexus/recipes/app_server_proxy.rb:47:in `from_file'
/var/chef/cache/cookbooks/nexus/recipes/default.rb:28:in `from_file'
/var/chef/cache/cookbooks/bkwi_build-server/recipes/nexus.rb:1:in `from_file'
/var/chef/cache/cookbooks/bkwi_build-server/recipes/default.rb:41:in `from_file'

Relevant File Content:

---

/var/chef/cache/cookbooks/nexus/libraries/chef_nexus.rb:

211: raise Nexus::EncryptedDataBagNotFound.new(data_bag)
212: end
213:
214: def encrypted_data_bag_item(node, data_bag, data_bag_item)
215: if node[:nexus][:use_chef_vault]
216: p data_bag
217: p data_bag_item
218>> item = ChefVault::Item.load(data_bag, data_bag_item)
219: else
220: item = Chef::EncryptedDataBagItem.load(data_bag, data_bag_item)
221: end
222: Mash.from_hash(item.to_hash)
223: rescue Net::HTTPServerException => e
224: nil
225: end
226: end
227: end

i used the following manual to setup the vault.
https://blog.chef.io/2016/01/21/chef-vault-what-is-it-and-what-can-it-do-for-you/
and combined this with the data-bags in the nexus-cookbook.

the values passed in row 218 are : "nexus_ssl_files" and "test_build" (test_build being an Environment)

i have no idea wat is going wrong, i've disabled all ssl attributes and i still get ssl references? weird.

anyone any idea why this doesn't work?
regards, Jaap-Jan