events.js:160
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE :::8081
at Object.exports._errnoException (util.js:1020:11)
at exports._exceptionWithHostPort (util.js:1043:20)
at Server._listen2 (net.js:1258:14)
at listen (net.js:1294:10)
at Server.listen (net.js:1390:5)
This problem is caused by the occupied port of 99.99%, such as the 8081 port mentioned above, so if you encounter this problem, please don’t be nervous, just find the corresponding port and close the application! How to check which application is used according to the port, this network a search a lot, here is not repeated! If you have any difficulty, please leave a message.)
Actually it’s not just react, as long as you use NPM to package, ports being occupied will report this error.
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