I've installed the Angular CDK in order to use PrimeNG's dropdown component but it throws an error.
I've added this in my app.module.ts:
import {DropdownModule} from 'primeng/dropdown';
And installed the Angular CDK by simply typing in the following:
npm install @angular/cdk --save
I had the same issue. Check your cdk version in your package.json
I solved installing an older version of cdk 10:
npm i @angular/cdk@9.2.4 --save