ROS一键安装崩溃（没有tools.base)

[Waiting151131]

标题：使用一键安装过程中遇到程序崩溃

Traceback (most recent call last):
  File "/tmp/fishinstall/install.py", line 138, in <module>
    main()
  File "/tmp/fishinstall/install.py", line 62, in main
    from tools.base import CmdTask,FileUtils,PrintUtils,ChooseTask,ChooseWithCategoriesTask,Tracking
ModuleNotFoundError: No module named 'tools.base'