just upgraded ruby. Now chef is not working
How do I resolve?
ubuntu@ubuntu-VirtualBox:~$ knife cookbook upload environment -E development
/usr/local/lib/ruby/2.0.0/
rubygems/dependency.rb:296:in to_specs': Could not find 'chef' (>= 0) among 8 total gem(s) (Gem::LoadError) from /usr/local/lib/ruby/2.0.0/rubygems/dependency.rb:307:into_spec’
from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in
gem' from /usr/local/bin/knife:22:in’