PSST-86 Management user+pass must be a requirement or else:
ERROR> Execution error:
can't convert nil into String

The error occurred line 42 of [COOKBOOKS]//default/9a3e1a653601e0f2437194a36b1785f3/cookbooks/app_jboss/recipes/install.rb in method 'digest' while executing:

40  	variables({
41  		:management_user     => node[:app_jboss][:management_user],
**  		:management_<hidden credential> => Digest::MD5.hexdigest(node[:app_jboss][:management_<hidden credential>])
43  	})
44  end

*ERROR> Subprocess exited with 1