Uncaught Error: listen EADDRINUSE: address already in use :::54000

[iea79]

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.47.0 x64
Electron: 5.0.13
OS: Ubuntu 20.04
Thrown From: livestyle-atom package 0.2.10

Stack Trace

Uncaught Error: listen EADDRINUSE: address already in use :::54000

At events.js:171

Error: listen EADDRINUSE: address already in use :::54000
    at Server.setupListenHandle [as _listen2] (net.js:1233:14)
    at listenInCluster (net.js:1281:12)
    at Server.listen (net.js:1369:7)
    at module.exports (/packages/livestyle-atom/lib/server.js:29:10)
    at /packages/livestyle-atom/lib/client.js:53:12)
    at Object.onceWrapper (events.js:282:20)
    at WebSocket.emit (events.js:194:13)
    at ClientRequest.onerror (/packages/livestyle-atom/node_modules/ws/lib/WebSocket.js:711:10)
    at ClientRequest.emit (events.js:194:13)
    at Socket.socketErrorListener (_http_client.js:401:9)
    at Socket.emit (events.js:194:13)
    at emitErrorNT (internal/streams/destroy.js:91:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
    at processTicksAndRejections (internal/process/task_queues.js:81:17)

Commands

Non-Core Packages

angular-snippets 8.0.2 
atom-beautify 0.33.4 
atom-jade 0.3.0 
atom-material-syntax 1.0.8 
atom-material-ui 2.1.3 
atom-minify 0.8.0 
atom-pug 0.2.0 
atom-twig 4.2.0 
atom-wordpress 0.3.0 
autocomplete-html-entities 0.2.0 
autocomplete-paths 2.12.2 
busy-signal 2.0.1 
emmet 2.4.3 
emmet-snippets-compatibility 1.0.6 
file-icons 2.1.40 
file-types 1.0.1 
fold-functions 0.11.0 
highlight-selected 0.17.0 
html-to-css 0.2.2 
intentions 1.1.5 
jade 1.2.0 
javascript-snippets 1.2.1 
jquery-snippets 11.0.0 
jshint 1.8.6 
language-babel 2.85.0 
language-jade 0.7.3 
language-pug-jade 0.2.1 
line-ending-converter 1.3.2 
line-ending-selector-unix 0.0.9 
livestyle-atom 0.2.10 
minimap 4.29.9 
monokai-flat 1.0.1 
one-dark-monokai 0.5.0 
path-copy 0.14.0 
pigments 0.40.2 
project-plus 1.0.0 
remote-ftp 2.2.4 
svg-preview 0.14.0 
turbo-javascript 1.4.0 
Visual-Studio-2015-Dark-Theme 2.4.2