(env) [root@VM-20-16-centos vue_test2]# npm run serve

> [email protected] serve
> vue-cli-service serve

 INFO  Starting development server...
[10%] building (0/0 modules)
node:internal/errors:464
    ErrorCaptureStackTrace(err);
    ^

Error: ENOSPC: System limit for number of file watchers reached, watch '/root/work/vue3/vue_test2/public'
    at FSWatcher.<computed> (node:internal/fs/watchers:244:19)
    at Object.watch (node:fs:2251:34)
    at createFsWatchInstance (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:119:15)
    at setFsWatchListener (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:166:15)
    at NodeFsHandler._watchWithNodeFs (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:331:14)
    at NodeFsHandler._handleDir (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:567:19)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async NodeFsHandler._addToNodeFs (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:617:16)
    at async /root/work/vue3/vue_test2/node_modules/chokidar/index.js:451:21
    at async Promise.all (index 0)
Emitted 'error' event on FSWatcher instance at:
    at FSWatcher._handleError (/root/work/vue3/vue_test2/node_modules/chokidar/index.js:647:10)
    at NodeFsHandler._addToNodeFs (/root/work/vue3/vue_test2/node_modules/chokidar/lib/nodefs-handler.js:645:18)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async /root/work/vue3/vue_test2/node_modules/chokidar/index.js:451:21
    at async Promise.all (index 0) {
  errno: -28,
  syscall: 'watch',
  code: 'ENOSPC',
  path: '/root/work/vue3/vue_test2/public',
  filename: '/root/work/vue3/vue_test2/public'
}

Solution:

Execute the following command

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p