Issue in starting RASA UI

[Prskriti]

On running command npm start getting type error on terminal side:

(base) INHYKPMAC01-MacBook-Pro:rasa-ui prakriti$ npm start

[email protected] start /Users/prakriti/Documents/rasa_bot/rasa-ui
node server/server.js

/Users/prakriti/Documents/rasa_bot/rasa-ui/server/server.js:65
'Rasa UI Server: http://localhost:' + listener.address().port
^

TypeError: Cannot read property 'port' of null
at checkRasaUI (/Users/prakriti/Documents/rasa_bot/rasa-ui/server/server.js:65:61)
at Object. (/Users/prakriti/Documents/rasa_bot/rasa-ui/server/server.js:60:1)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Function.Module.runMain (module.js:694:10)
at startup (bootstrap_node.js:204:16)
at bootstrap_node.js:625:3
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: node server/server.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /Users/prakriti/.npm/_logs/2019-11-13T11_43_13_078Z-debug.log

[davidjeevan]

you solved that issue ?