Error: EMFILE: too many open files, open '/app/build/index.html'

Question

Using Serve to serve my React app. It seems that too many people are reading the static files. but somehow it is not getting closed. Due to this the react app is crashing

events.js:177
      throw er; // Unhandled 'error' event
      ^

Error: EMFILE: too many open files, open '/app/build/index.html'
Emitted 'error' event on ReadStream instance at:
    at internal/fs/streams.js:151:12
    at FSReqCallback.oncomplete (fs.js:155:23) {
  errno: -24,
  code: 'EMFILE',
  syscall: 'open',
  path: '/app/build/index.html'
}

Any suggestions??