LoadError: cannot load such file -- locationclass
from C:/Ruby/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from C:/Ruby/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from (irb):1
from C:/Ruby/bin/irb.cmd:19:in `<main>'