title: ionic3 - inappBrowser - IOS files don't load
body: <p>i have a problem on IOS when i try to load a PDF File with inAppBrowser.
  With the same code, i don't have any problem to open the file on the Web</p>
  
  <p>I call the InAppBrowser to open a PDF like this : </p>
  
  <pre><code> this.inAppBrowser.create(helpAsset.url, '_system', 'hideurlbar=yes');
  </code></pre>
  
  <p>helpAsset.url define a file which is in my asset/ repository, it's an internal file</p>
  
  <p>When i build my app with xcode in debug and i put it on my Ipad (on IOS 12), the file open in Safari without problem.
  But with the same version but in release mode, the file don't open and i have a empty page</p>
  
  <p>I tried to change '_system' in '_blank'but the problem is the same.</p>
  
  <p>I have read that it can be a CORS problem which can be solve with the ionic-native http but i have no idea how to integrate it with the inappBrowser </p>
  
  <p>Anyone know how to fix this?</p>