Ruby Gem issue generates unexpected UTF-8 parsing Xen facts

Customer installing either 2018.1.5 or 2019.0 on AWS encountered same issue with RHEL.  Is this a virtual fact that shouldn't appear except with HyperV, kvm or VMware zones?

 

“puppet agent –test –debug --trace”:

Debug: Facter: resolving Xen facts.

Error: Failed to apply catalog: Could not render to json: source sequence is illegal/malformed utf-8

/opt/puppetlabs/puppet/lib/ruby/vendor_gems/gems/multi_json-1.13.1/lib/multi_json/adapters/json_common.rb:19:in `to_json'

/opt/puppetlabs/puppet/lib/ruby/vendor_gems/gems/multi_json-1.13.1/lib/multi_json/adapters/json_common.rb:19:in `dump'

/opt/puppetlabs/puppet/lib/ruby/vendor_gems/gems/multi_json-1.13.1/lib/multi_json/adapter.rb:25:in `dump'

/opt/puppetlabs/puppet/lib/ruby/vendor_gems/gems/multi_json-1.13.1/lib/multi_json.rb:139:in `dump'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/json.rb:70:in `dump'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/network/format_support.rb:100:in `to_json'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/network/format.rb:65:in `render'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/network/format_support.rb:106:in `render'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer/fact_handler.rb:43:in `facts_for_uploading'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:140:in `block in get_facts'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:519:in `block in thinmark'

/opt/puppetlabs/puppet/lib/ruby/2.4.0/benchmark.rb:308:in `realtime'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:518:in `thinmark'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:139:in `get_facts'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:332:in `run_internal'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:237:in `block in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/context.rb:65:in `override'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet.rb:260:in `override'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:211:in `run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:59:in `block (5 levels) in run'

/opt/puppetlabs/puppet/lib/ruby/2.4.0/timeout.rb:76:in `timeout'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:58:in `block (4 levels) in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent/locker.rb:21:in `lock'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:52:in `block (3 levels) in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:130:in `with_client'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:49:in `block (2 levels) in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:87:in `run_in_fork'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:48:in `block in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:179:in `controlled_run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:46:in `run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/agent.rb:372:in `onetime'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/agent.rb:350:in `run_command'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:375:in `block in run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:667:in `exit_on_fail'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:375:in `run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:136:in `run'

/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:73:in `execute'

/opt/puppetlabs/puppet/bin/puppet:5:in `<main>'

Debug: Dynamically-bound server lookup failed, falling back to report_server setting

Debug: Dynamically-bound port lookup failed; falling back to report_port setting