mac无法打开Charles抓包工具： Charles cannot configure your proxy settings while it is on a read-only volume

mac 打开Charles 报错：

Charles cannot configure your proxy settings while it is on a read-only volume. Perhaps you are running Charles from the disk image? If so, please copy Charles to the Applications folder and run it again. Otherwise please ensure that Charles is writable by the current user and try again.

当它位于只读卷上时，Charles无法配置您的代理设置。 也许您是从磁盘映像运行Charles的，如果是这样，请将Charles复制到Applications文件夹，然后再次运行。 否则，请确保当前用户可写Charles，然后重试。

解决办法 ：

sudo chown -R root "/Applications/Charles.app/Contents/Resources"
sudo chmod -R u+s "/Applications/Charles.app/Contents/Resources"