Angular2 material dialog has issues - Did you add it to @NgModule.entryComponents?

Question

I am trying to follow the docs on https://material.angular.io/components/component/dialog but I cannot understand why it has the below issue?

I added the below on my

Answer 1

I had the same issues and i had dialogComponent in EntryComponents and it still did not work. this is how I was able to solve the problem. the link is here to a previously answered post:

https://stackoverflow.com/a/64224799/14385758