no implicit conversion of nil into String

[DDfans]

localhost:~ Stephen$ fir p /Users/Stephen/Desktop/ipa/lptest-2020.ipa
no implicit conversion of nil into String
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/parser/ipa.rb:92:in join' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/parser/ipa.rb:92:in info'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/parser/ipa.rb💯in identifier' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/parser/ipa.rb:79:in basic_info'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/parser/ipa.rb:70:in full_info' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/info.rb:27:in ipa_info'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/publish.rb:266:in initialize_publish_options' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/util/publish.rb:10:in publish'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/cli.rb:146:in publish' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/thor-0.20.3/lib/thor/command.rb:27:in run'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in invoke_command' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/lib/fir/cli.rb:193:in invoke_command'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/thor-0.20.3/lib/thor.rb:387:in dispatch' /Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/thor-0.20.3/lib/thor/base.rb:466:in start'
/Users/Stephen/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/fir-cli-2.0.9/bin/fir:8:in <top (required)>' /usr/local/bin/fir:23:in load'
/usr/local/bin/fir:23:in <main>' /usr/local/bin/ruby_executable_hooks:24:in eval'
/usr/local/bin/ruby_executable_hooks:24:in `

'

ruby 版本2.7.0
fir-cli 版本 2.0.9