pacer-neo4j paths_to bug

Gemfile

source "https://rubygems.org"

gem "pacer-neo4j", require: "pacer-neo4j"

Output

> jruby -S path_to_bug.rb 
Created vertices
Created edge
NoMethodError: undefined method `element_type' for nil:NilClass
          attach_pipe at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-neo4j-2.1.0-java/lib/pacer-neo4j/algo.rb:294
       build_pipeline at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer/core/route.rb:558
             iterator at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer/core/route.rb:493
                 each at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer/core/route.rb:131
              collect at org/jruby/RubyEnumerable.java:713
              inspect at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer/core/route.rb:319
  hide_route_elements at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer.rb:102
              inspect at /Users/tsingh/.rbenv/versions/jruby-1.7.0/lib/ruby/gems/shared/gems/pacer-1.1.1-java/lib/pacer/core/route.rb:316
               (root) at path_to_bug.rb:17

path_to_bug.rb

require "bundler"
Bundler.require

GRAPH = Pacer.neo4j "temp"

v1 = GRAPH.create_vertex
v2 = GRAPH.create_vertex

puts "Created vertices"

e1 = GRAPH.create_edge nil, v1, v2, :follows

puts "Created edge"

p = v1.paths_to v2

puts p.inspect