And I probably shouldn't have raised this in this repo... sorry about that.
/usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/util.rb:21:in `unescape': uninitialized class variable @@accept_charset in #<Class:CGI> (NameError)
Did you mean? @@accept_charset
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/util.rb:21:in `prettify_policy'
from (erb):6:in `block in apply_template'
from (erb):1:in `each'
from (erb):1:in `apply_template'
from /usr/local/lib/ruby/2.4.0/erb.rb:896:in `eval'
from /usr/local/lib/ruby/2.4.0/erb.rb:896:in `result'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/util.rb:4:in `apply_template'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/resource/iam_role.rb:19:in `tf'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/resource/iam_role.rb:7:in `tf'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/cli.rb:240:in `tf'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/cli.rb:227:in `execute'
from /usr/local/bundle/gems/terraforming-0.13.2/lib/terraforming/cli.rb:104:in `iamr'
from /usr/local/bundle/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
from /usr/local/bundle/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
from /usr/local/bundle/gems/thor-0.19.4/lib/thor.rb:369:in `dispatch'
from /usr/local/bundle/gems/thor-0.19.4/lib/thor/base.rb:444:in `start'
from /usr/local/bundle/gems/terraforming-0.13.2/bin/terraforming:5:in `<top (required)>'
from /usr/local/bundle/bin/terraforming:17:in `load'
from /usr/local/bundle/bin/terraforming:17:in `<main>'