title: Angular: 'ngx-mat-select-search' is not a known element
body: <p>I'm trying to use the ngx-mat-select-search component. I followed the tutorial on <a href="https://www.npmjs.com/package/ngx-mat-select-search" rel="nofollow noreferrer">https://www.npmjs.com/package/ngx-mat-select-search</a> but after I install it and try to use the exact code from the tutorial (<a href="https://stackblitz.com/github/bithost-gmbh/ngx-mat-select-search-example" rel="nofollow noreferrer">https://stackblitz.com/github/bithost-gmbh/ngx-mat-select-search-example</a>) I always get this error when I try to use the ngx-mat-select-search tag (<code>&lt;ngx-mat-select-search&gt;&lt;/ngx-mat-select-search&gt;</code>):</p>
  
  <blockquote>
    <p>'ngx-mat-select-search' is not a known element:
    1. If 'ngx-mat-select-search' is an Angular component, then verify that it is part of this module.
    2. If 'ngx-mat-select-search' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.</p>
  </blockquote>
  
  <p>Thank you for your help!</p>