紧急通知：禁止一切关于政治&VPN翻墙等话题，发现相关帖子会立马删除封号
小鱼 ROS 2 新书上线！点击链接查看， 新书配套视频点击链接查看。
提问前必看的发帖注意事项—— 提问前必看！不符合要求的问题拒绝回答！！
社区使用指南—如何添加标签修改密码
小鱼 ROS 2 新书上线！点击链接查看， 新书配套视频点击链接查看。
提问前必看的发帖注意事项—— 提问前必看！不符合要求的问题拒绝回答！！
社区使用指南—如何添加标签修改密码
执行ros2 launch fishbot_navigation2 navigation2.launch.py 错误
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dujutese@dujutese-virtual-machine:~/fishbot$ ros2 launch fishbot_navigation2 navigation2.launch.py
[INFO] [launch]: All log files can be found below /home/dujutese/.ros/log/2024-04-20-22-30-50-521955-dujutese-virtual-machine-38209
[INFO] [launch]: Default logging verbosity is set to INFO
[ERROR] [launch]: Caught exception in launch (see debug for traceback): Caught multiple exceptions when trying to load file of format [py]:- PackageNotFoundError: "package 'nav2_bringup' not found, searching: ['/home/dujutese/fishbot/install/fishbot_navigation2', '/home/dujutese/fishbot/install/fishbot_interfaces', '/home/dujutese/fishbot/install/fishbot_description', '/home/dujutese/fishbot/install/fishbot_cartographer', '/home/dujutese/fishbot/install/fishbot_bringup', '/opt/ros/humble']"
- InvalidFrontendLaunchFileError: The launch file may have a syntax error, or its format is unknown
dujutese@dujutese-virtual-machine:~/fishbot$
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@liao_03 大佬请问怎么解决的