When I execute puppet in a container with centos 7 I get this:
/usr/share/rubygems/rubygems/path_support.rb:68:in `path=': undefined method `+' for nil:NilClass (NoMethodError)
from /usr/share/rubygems/rubygems/path_support.rb:30:in `initialize'
from /usr/share/rubygems/rubygems.rb:357:in `new'
from /usr/share/rubygems/rubygems.rb:357:in `paths'
from /usr/share/rubygems/rubygems.rb:379:in `path'
from /usr/share/rubygems/rubygems/specification.rb:794:in `dirs'
from /usr/share/rubygems/rubygems/specification.rb:658:in `each_normal'
from /usr/share/rubygems/rubygems/specification.rb:669:in `_all'
from /usr/share/rubygems/rubygems/specification.rb:822:in `each'
from /usr/share/rubygems/rubygems/specification.rb:864:in `find'
from /usr/share/rubygems/rubygems/specification.rb:864:in `find_inactive_by_path'
from /usr/share/rubygems/rubygems.rb:175:in `try_activate'
from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:132:in `rescue in require'
from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:144:in `require'
from <internal:abrt_prelude>:2:in `<compiled>'
What's happening? How can I solve it? Thank's