bug in docs v6 angular --app

[robvaneck]

I followed the v6 SSR docs..
section > "Creating scripts"

https://v6.angular.io/guide/universal#creating-scripts

"build:client-and-server-bundles": "ng build --prod && ng build --prod --app 1 --output-hashing=false"

In the Angular CLI 6.2.x im getting a build error when using

npm run build:client-and-server-bundles && npm run webpack:server

output

Unknown option: '--app'

solution?

--project=myapp