如何关闭端口3000运行
### For Linux/Mac OS search (sudo) run this in the terminal:
$ lsof -i tcp:3000
$ kill -9 PID
### On Windows:
netstat -ano | findstr :3000
tskill typeyourPIDhere
### change tskill for taskkill in git bash
在端口3000mac上终止进程
kill $(lsof -ti:3000,3001,8080)