Hello,
Just sharing a solution to the errors below, when you run "npm start" and a port is already in use:
Error: listen EADDRINUSE 127.0.0.1:8080" (or EADDRINUSE 127.0.0.1:3000)
1) Type "netstat -aon" on Command Prompt
2) Find the relative PID number to 127.0.0.1:8080 (or 3000)
3) Run "taskkill /f /pid pidnumber"
4) Run "npm start" again
nuxt npm run dev 报错Solution to the "Error: listen EADDRINUSE 127.0.0.1:8080"
原文：https://www.cnblogs.com/chunshan-blog/p/10755941.html