Error raising server in Ruby

I need help with this error, I'm new to this and I do not know why I get this

/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 'require': cannot load such file -- bundler/setup (LoadError)
        from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 'require'
        from /home/admin1/Aplicacion/config/boot.rb:3:in '<top (required)>'
        from bin/rails:3:in 'require_relative'
        from bin/rails:3:in '<main>'