錯(cuò)誤截圖

RN項(xiàng)目之前一直運(yùn)行OK，換了新的Mac，操作系統(tǒng)10.13.6，再次運(yùn)行項(xiàng)目時(shí)報(bào)錯(cuò)。

該錯(cuò)誤同樣出現(xiàn)在升級(jí)Mac系統(tǒng)時(shí)。

原因：watchman需要重裝
直接install watchman提示watchman已經(jīng)安裝，那就使用升級(jí)命令：brew upgrade watchman

?  mywork brew install watchman
Error: watchman 4.9.0 is already installed
To upgrade to 4.9.0_2, run `brew upgrade watchman`
?  mywork brew upgrade watchman

安裝后，項(xiàng)目運(yùn)行正常。