error parsing Gemfile: There was a NoMethodError (undefined method `metadata=' )

[adewaguru]

When I try to run Bundle install it throws following error.

OS - Ubuntu server 14.0.3
ruby version- 1.9.3p484
jruby version- jruby 1.5.6
gem version - 1.8.23

[!] There was an error parsing Gemfile: There was a NoMethodError while loading logstash-input-dynamodb.gemspec:
undefined method metadata=' for #<Gem::Specification name=logstash-input-dynamodb version=1.0.0> from /home/ubuntu/logstash-input-dynamodb/logstash-input-dynamodb.gemspec:19:inblock in

'
. Bundler cannot continue.

from /home/ubuntu/logstash-input-dynamodb/Gemfile:2

-------------------------------------------

source 'https://rubygems.org'

gemspec

-------------------------------------------

[ajoy123]

I had exactly the same problem but from http://stackoverflow.com/questions/32344755/cannot-install-dynamodb-logstash-plugin-in-ubuntu, I downloaded jruby http://jruby.org/download and then used the ruby under downloaded jruby C:\jruby-9.0.4\bin\gem install bundler and that did the trick. everything else worked after that. Hopefully that worked for you. Cheers.