我正在尝试在Mac上运行一个基本的ReactNative项目(教程),但是在运行模拟器或部署到设备时我得到了这个:Error:watchman--no-prettyget-socknamereturnedwithexitcodenull2016-11-09T23:34:15,970:[cli]Failedtoopen/Users/myuser/Library/LaunchAgents/com.github.facebook.watchman.plistforwrite:Notadirectory我尝试通过gitbrewinstall--HEADwatchman重新安装watchman,