ami me salio este error:
ERROR in ./node_modules/ng-pick-datetime/dialog/dialog.service.js Module not found: Error: Can't resolve '@angular/cdk/portal' in '/Users/joelgarcia/Documents/angular/universal-starter-master/node_modules/ng-pick-datetime/dialog' ERROR in ./node_modules/ng-pick-datetime/dialog/dialog-container.component.js Module not found: Error: Can't resolve '@angular/cdk/portal' in '/Users/joelgarcia/Documents/angular/universal-starter-master/node_modules/ng-pick-datetime/dialog'
Lo solucione instalando la dependencia "npm install @angular/cdk", ya que en la version 6 de angular no viene instalada por default