Cannot connect to extension in Looker

[Kamrul-ha]

@LukaFontanilla @jeremytchang @drstrangelooker

Hi all, I will really appreciated if could help below please.

When 5. start the development server npm run develop, its giving below [webpack-cli] Error, however, when npm run build then it created bundle.js file in local project directory in cloud shell. I could see a Dashboard extension in my Application but when i open the extension or add this on tiles, it giving error massage "Cannot connect to extension". Any help will really appreciated . Many thanks

[webpack-cli] Error: Unknown option '--disable-host-check'
[webpack-cli] Run 'webpack --help' to see available commands and options