title: After upgrade to Angular 6/Material 6 why am I facing 'mat-input-container is not a known element'?
body: <p>Below code was running fine before I upgraded to 6. Not sure what changed in between! I have required modules imported as well</p>
  
  <pre><code>MatInputModule,
  MatSelectModule,
  MatFormFieldModule
  
    &lt;mat-input-container&gt;
      &lt;mat-select placeholder="Sort By" formControlName="sortBy"&gt;
        &lt;mat-option *ngFor="let sortByObject of sortByList" [value]="sortByObject.value"&gt;
          {{ sortByObject.label }}
        &lt;/mat-option&gt;
      &lt;/mat-select&gt;
    &lt;/mat-input-container&gt;
  </code></pre>