Symfony 6《快速入门》示例运行问题：路径含symfony致安装失败

问题场景 #

执行《Symfony: The Fast Track》的项目初始化步骤时，运行命令：

symfony new --version=6.2-1 --book guestbook

若项目的父文件夹名称包含symfony字样，会触发全程安装异常，无法推进后续操作；但在~/projects这类不含symfony关键词的目录下执行命令，所有步骤均正常。

报错汇总 #

• Git标签缺失
• Blackfire服务启动报错：

  ERROR: for guestbook_blackfire_1 Cannot start service blackfire: cgroups: cgroup mountpoint does not exist: unknown
  

• OCI运行时创建失败：

  Cannot start service blackfire: OCI runtime create failed: container with id exists: ...
  

• 数据库连接拒绝：

  An exception occurred in the driver: SQLSTATE[08006] [7] connection to server at "127.0.0.1", port 5432 failed: Connection refused Is the server running on that host and accepting TCP/IP connections?
  

• docker-compose up -d多服务启动失败：

  docker-compose up -d
  Building with native build. Learn about native build in Compose here: https://docs.docker.com/go/compose-native-build/
  Starting guestbook_mailer_1    ... error
  Starting guestbook_database_1 ... 
  Starting guestbook_blackfire_1 ... 
  Starting guestbook_database_1  ... error
  ERROR: for guestbook_mailer_1  Cannot start service mailer: cgroups: cgroup mountpoint does not exist: unknown
  
  Starting guestbook_blackfire_1 ... error
  
  ERROR: for guestbook_blackfire_1  Cannot start service blackfire: cgroups: cgroup mountpoint does not exist: unknown
  
  ERROR: for mailer  Cannot start service mailer: cgroups: cgroup mountpoint does not exist: unknown
  
  ERROR: for database  Cannot start service database: cgroups: cgroup mountpoint does not exist: unknown
  
  ERROR: for blackfire  Cannot start service blackfire: cgroups: cgroup mountpoint does not exist: unknown
  ERROR: Encountered errors while bringing up the project.
  

已尝试的无效修复手段 #

• 删除Docker容器、镜像后重新构建
• 执行cgroup挂载命令：

  sudo mkdir /sys/fs/cgroup/systemd
  sudo mount -t cgroup -o none,name=systemd cgroup /sys/fs/cgroup/systemd
  

• 多次重复执行手册到第8步的所有流程
• 迁移Git仓库并手动移动.git目录以修复标签缺失问题
• 查阅技术社区帖子尝试其他常规方案

最终解决方法 #

保证项目的完整路径中不包含symfony字样，将项目迁移到不含该关键词的目录（如~/projects）后重新执行初始化命令，所有异常均消失，安装及后续步骤顺利完成。

内容的提问来源于stack exchange，提问作者VladSavitsky