Twitter Timeline Embed Not Showing up in iOS

I have embedded a Twitter timeline in one of the pages of my app. However, it does not show up when I build the project to Xcode and simulate it on an iOS device. It does work in Android.

In Index.html:

  <!-- Timeline Twitter -->
  <script async src="" charset="utf-8"></script>

  <!-- cordova.js required for cordova apps (remove if not needed) -->
  <script src="cordova.js"></script>

in Twitter.html:

a class="twitter-timeline" href=""></a> <script async src="" charset="utf-8"></script>

In Twitter.ts:

ngAfterViewInit() {
           var js: any,

Did you remote debug the problem on the device already? Follow these instructions here to debug the problem in Safari dev tools: Look at the console and network tabs for errors.

Okay thanks. I will when I get a chance.