按照此教程在MacBook上安裝ROS時遇到一些問題，記錄網上查找的解決方法：
問題1. 安裝homebrew出錯： Failed to connect to raw.githubusercontent.com port 443: Connection refused error:
解決方法：
此博客中方法二
問題2. 安裝homebrew出錯 ：
fatal: unable to access 'https://github.com/Homebrew/homebrew-core/': transfer closed with outstanding read data remaining
Error: Failure while executing; `git clone https://github.com/Homebrew/homebrew-core /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core` exited with 128.
Error: Failure while executing; `/usr/local/bin/brew tap homebrew/core` exited with 1.
Failed during: /usr/local/bin/brew update --force
解決方法：參考此博客
注：安裝教程中【6. 安裝DDS（Data Distribution Service）】未安裝