[Satellite6] satellite-maintain fails with command_runner.rb:88:in `strip': invalid byte sequence in UTF-8 (ArgumentError)

Issue

satellite-maintain fails with error

satellite-maintain
/usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/utils/command_runner.rb:88:in `strip': invalid byte sequence in UTF-8 (ArgumentError)
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/utils/command_runner.rb:88:in `block in run_non_interactively'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/utils/command_runner.rb:83:in `popen'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/utils/command_runner.rb:83:in `run_non_interactively'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/utils/command_runner.rb:30:in `run'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/system_helpers.rb:59:in `execute_runner'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/system_helpers.rb:73:in `execute'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/system_helpers.rb:48:in `execute?'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/package_manager/yum.rb:38:in `installed?'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/definitions/features/capsule.rb:10:in `block (2 levels) in <class:Capsule>'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:226:in `instance_exec'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:226:in `block in evaluate_confines'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:225:in `each'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:225:in `all?'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:225:in `evaluate_confines'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/concerns/metadata.rb:200:in `present?'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/detector.rb:112:in `each'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/detector.rb:112:in `find'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/detector.rb:112:in `detect_feature'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/detector.rb:11:in `feature'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli/backup_command.rb:56:in `common_backup_options'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli/backup_command.rb:111:in `<class:OnlineBackupCommand>'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli/backup_command.rb:108:in `<module:Cli>'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli/backup_command.rb:2:in `<module:ForemanMaintain>'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli/backup_command.rb:1:in `<top (required)>'
    from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/lib/foreman_maintain/cli.rb:7:in `<top (required)>'
    from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/foreman_maintain-0.6.8/bin/foreman-maintain:14:in `<top (required)>'
    from /usr/bin/satellite-maintain:23:in `load'
    from /usr/bin/satellite-maintain:23:in `<main>'