errors trying to convert and use help

[angelacode]

json2csv help convert  
=> NameError: undefined local variable or method `convert' for main:Object

json2csv convert errors.json
=> NameError: undefined local variable or method `errors' for main:Object

[angelacode]

Here is the full stack trace:

NoMethodError: undefined method `convert' for main:Object from (irb):4 from /usr/local/opt/rbenv/versions/2.1.5/bin/irb:11:in`' irb(main):005:0> puts caller /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/workspace.rb:86:in `eval' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/workspace.rb:86:in`evaluate' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/context.rb:380:in `evaluate' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:492:in`block (2 levels) in eval_input' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:624:in `signal_status' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:489:in`block in eval_input' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/ruby-lex.rb:247:in `block (2 levels) in each_top_level_statement' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/ruby-lex.rb:233:in`loop' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/ruby-lex.rb:233:in `block in each_top_level_statement' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/ruby-lex.rb:232:in`catch' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb/ruby-lex.rb:232:in `each_top_level_statement' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:488:in`eval_input' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:397:in `block in start' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:396:in`catch' /usr/local/opt/rbenv/versions/2.1.5/lib/ruby/2.1.0/irb.rb:396:in `start' /usr/local/opt/rbenv/versions/2.1.5/bin/irb:11:in`' => nil

[korczis]

Can you provide sample data file, please?