未处理的异常：异常：/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in`require'：无法加载此类文件 -- xcodeproj（

Unhandled exception:
Exception: /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- xcodeproj (LoadError)
        from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from -e:1:in `<main>'

#0      ConfigCommand.run (package:flutterfire_cli/src/commands/config.dart:517:11)
<asynchronous suspension>
#1      CommandRunner.runCommand (package:args/command_runner.dart:209:13)
<asynchronous suspension>
#2      main (file:///Users/dylanguzman/.pub-cache/hosted/pub.dartlang.org/flutterfire_cli-0.2.6+1/bin/flutterfire.dart:57:5)
<asynchronous suspension>

我试过 ：

flutterfire configure --project=test-app-egr423

使用以下 Firebase 应用成功生成 Firebase 配置文件 lib/firebase_options.dart：