/opt/sensu/embedded/lib/ruby/site_ruby/2.3.0/rubygems/specification.rb:2278:in `check_version_conflict': can't activate json-1.8.2, already activated json-1.8.3 (Gem::LoadError)\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.3.0/rubygems/specification.rb:1404:in `activate'\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:89:in `block in require'\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:88:in `each'\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:88:in `require'\n\tfrom /opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-graphite-2.0.0/bin/mutator-graphite.rb:35:in `<top (required)>'\n\tfrom /opt/sensu/embedded/bin/mutator-graphite.rb:22:in `load'\n\tfrom /opt/sensu/embedded/bin/mutator-graphite.rb:22:in `<main>'\n