Two of these nodes with the same port abends the main node-red

[jmorris644]

I copied and pasted a configured ftp-server node. When I deployed node-red abended. I had to delete this nodes .js file to get node-red restarted.

25 Nov 10:47:00 - [red] Uncaught Exception:
25 Nov 10:47:00 - Error: listen EADDRINUSE: address already in use :::7021
    at Server.setupListenHandle [as _listen2] (net.js:1331:16)
    at listenInCluster (net.js:1379:12)
    at Server.listen (net.js:1465:7)
    at FtpServer.<computed> [as listen] (/home/iotonastick/.node-red/node_modules/@svrooij/ftpd/lib/FtpServer.js:118:31)
    at new RED.nodes.registerType.credentials.username.type (/home/iotonastick/.node-red/node_modules/node-red-contrib-ftp-server/index.js:237:20)
    at Object.createNode (/usr/lib/node_modules/node-red/node_modules/@node-red/runtime/lib/flows/util.js:86:27)
    at Flow.start (/usr/lib/node_modules/node-red/node_modules/@node-red/runtime/lib/flows/Flow.js:205:48)
    at start (/usr/lib/node_modules/node-red/node_modules/@node-red/runtime/lib/flows/index.js:371:33)
nodered.service: Main process exited, code=exited, status=1/FAILURE