/etc/apt/source.list.d/pve-no-sub.list: No such file or director

回答: 根据引用\[1\]和引用\[2\]的内容，你遇到了在执行sudo apt update时出现的报错。报错信息显示/etc/apt/sources.list.d/ros-latest.list文件中的第一行存在格式错误。为了解决这个问题，你可以尝试删除该文件并重新初始化ROS依赖，具体操作可以使用以下命令: sudo rm /etc/ros/rosdep/sources.list.d/20-default.list sudo rosdep init。另外，根据引用\[3\]的内容，你还遇到了/etc/apt/source.list.d/pve-no-sub.list文件或目录不存在的问题。你可以尝试使用wget命令重新下载阿里的CentOS-Base.repo文件，具体命令如下: wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo。这样应该能够解决你遇到的问题。
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