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我正在开发一个项目,我想让我的代码与 Symfony 的最新稳定版本保持同步,现在他们已经发布了新的稳定版本 2.3.6,当我尝试升级时,我收到以下错误。

php composer.phar update
Loading composer repositories with package information



  [ErrorException]     
  Undefined offset: 3  



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [packagesN]
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