Issue in gem Installation on Logstash 2.2.1

Elastic Stack Logstash
1

Hi,

I am trying to install logstash-output-riemann 2.0 in my Logstash 2.2.1. I am getting the below error,

-sh-4.2$ cd /software/logstash-2.2.1/bin
-sh-4.2$ ./plugin install /gems/logstash-output-riemann-0.2.0.gem
Validating /gems/logstash-output-riemann-0.2.0.gem
Installing logstash-output-riemann
Error Bundler::GemspecError, retrying 1/10
There was a Errno::ENOENT while loading beefcake.gemspec:
No such file or directory - git from
  /software/logstash-2.2.1/vendor/local_gems/b45029b8/beefcake-0.3.7/beefcake.gemspec:15:in `eval_gemspec'
Error Bundler::GemspecError, retrying 2/10
There was a Errno::ENOENT while loading beefcake.gemspec:

I don't know why I am getting this error. I am following the above procedure for installing all kind of gems but I am getting error in this gem file only.

Kindly help me to resolve the issue