newrelic_pivotal_agent fail to start for reddis.

[vishal0511]

I am not able to start agent. I am getting below error can you please look into this.

[root@dp30-ustst-ecp-rabbitmq01 newrelic_pivotal_agent-master]# ./pivotal_agent
/usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/constants.rb:2:in <module:Bundler>': uninitialized constant Bundler::RbConfig (NameError) from /usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/constants.rb:1:in<top (required)>'
from /usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/shared_helpers.rb:4:in require' from /usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/shared_helpers.rb:4:in<top (required)>'
from /usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/setup.rb:1:in require' from /usr/local/rvm/gems/ruby-1.9.1-p431/gems/bundler-1.10.2/lib/bundler/setup.rb:1:in<top (required)>'
from ./pivotal_agent:29:in require' from ./pivotal_agent:29:in

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