title: ERROR in The loader ".../src/app/app.component.html" didn't return a string
body: <p>I have been working on a nativescript 6 application with angular 9, they asked me to update the app to nativescript 7 with angular 11, I had some problems and right now I am, with this.</p>
  <p>ERROR in The loader &quot;C:/App/src/app/app.component.html&quot; didn't return a string.</p>
  <p><a href="https://i.stack.imgur.com/BX1Mt.png" rel="nofollow noreferrer">error image</a></p>
  <p>I use the following documentation for upgrade nativescript version:</p>
  <p><a href="https://nativescript.org/blog/nativescript-7-announcement/" rel="nofollow noreferrer">https://nativescript.org/blog/nativescript-7-announcement/</a></p>
  <p>my package.json:</p>
  <pre><code>{
    &quot;dependencies&quot;: {
      &quot;@angular/animations&quot;: &quot;~8.2.0&quot;,
      &quot;@angular/common&quot;: &quot;~8.2.0&quot;,
      &quot;@angular/compiler&quot;: &quot;^11.2.1&quot;,
      &quot;@angular/core&quot;: &quot;^11.2.1&quot;,
      &quot;@angular/forms&quot;: &quot;~8.2.0&quot;,
      &quot;@angular/platform-browser&quot;: &quot;~8.2.0&quot;,
      &quot;@angular/platform-browser-dynamic&quot;: &quot;~8.2.0&quot;,
      &quot;@angular/router&quot;: &quot;~8.2.0&quot;,
      &quot;@nativescript/angular&quot;: &quot;10.0.0&quot;,
      &quot;@nativescript/core&quot;: &quot;7.0.0&quot;,
      &quot;@nativescript/theme&quot;: &quot;~2.3.3&quot;,
      &quot;@nativescript/webpack&quot;: &quot;3.0.0&quot;,
      &quot;@nstudio/nativescript-cardview&quot;: &quot;^1.0.0&quot;,
      &quot;@nstudio/nativescript-checkbox&quot;: &quot;^1.0.0&quot;,
      &quot;nativescript-akylas-themes&quot;: &quot;^2.0.2&quot;,
      &quot;nativescript-appversion&quot;: &quot;^1.4.4&quot;,
      &quot;nativescript-camera&quot;: &quot;^4.5.0&quot;,
      &quot;nativescript-drop-down&quot;: &quot;^5.0.6&quot;,
      &quot;nativescript-feedback&quot;: &quot;^1.3.12&quot;,
      &quot;nativescript-google-maps-sdk&quot;: &quot;^2.9.1&quot;,
      &quot;nativescript-imagepicker&quot;: &quot;^7.1.0&quot;,
      &quot;nativescript-plugin-firebase&quot;: &quot;^10.5.2&quot;,
      &quot;nativescript-ui-calendar&quot;: &quot;^6.1.0&quot;,
      &quot;nativescript-ui-listview&quot;: &quot;^8.2.0&quot;,
      &quot;nativescript-ui-sidedrawer&quot;: &quot;~8.0.0&quot;,
      &quot;reflect-metadata&quot;: &quot;~0.1.12&quot;,
      &quot;rxjs&quot;: &quot;^6.4.0&quot;,
      &quot;zone.js&quot;: &quot;~0.9.1&quot;
    },
    &quot;devDependencies&quot;: {
      &quot;@angular-devkit/build-angular&quot;: &quot;~0.1102.1&quot;,
      &quot;@angular/cli&quot;: &quot;^11.2.1&quot;,
      &quot;@angular/compiler-cli&quot;: &quot;^11.2.1&quot;,
      &quot;@nativescript/schematics&quot;: &quot;^1.0.0&quot;,
      &quot;@nativescript/types&quot;: &quot;7.0.0&quot;,
      &quot;@ngtools/webpack&quot;: &quot;~8.2.0&quot;,
      &quot;codelyzer&quot;: &quot;^6.0.0&quot;,
      &quot;node-sass&quot;: &quot;^4.7.1&quot;,
      &quot;tns-android&quot;: &quot;6.5.3&quot;,
      &quot;tslint&quot;: &quot;~6.1.0&quot;,
      &quot;typescript&quot;: &quot;^4.1.5&quot;
    },
    &quot;readme&quot;: &quot;NativeScript Application&quot;,
    &quot;main&quot;: &quot;main.js&quot;
  }
  </code></pre>
  <p>I am aware that I have not updated some angular dependencies but in another branch I did the update and the error continued.</p>