我正在尝试运行我的ruby脚本，但我一直收到此错误。我试过重新安装ruby和rails。 ruby版本是2.3.3，rails是4.2.5。任何想法？
ruby firebasepushserver.rb
/Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require': incompatible library version - /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json/ext/parser.bundle (fatal)
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json/ext.rb:7:in `<module:Ext>'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json/ext.rb:6:in `<module:JSON>'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json/ext.rb:3:in `<top (required)>'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json.rb:59:in `<module:JSON>'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/json-2.1.0/lib/json.rb:55:in `<top (required)>'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/pg-0.20.0/lib/pg/text_encoder.rb:3:in `<top (required)>'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/pg-0.20.0/lib/pg.rb:63:in `<module:PG>'
from /Users/paulyang/.rvm/gems/ruby-2.3.3/gems/pg-0.20.0/lib/pg.rb:35:in `<top (required)>'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:133:in `require'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:133:in `rescue in require'
from /Users/paulyang/.rvm/rubies/ruby-2.3.3/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:40:in `require'
from firebasepushserver.rb:4:in `<main>'