Load PDF from Firebase

Hi,
Is there a way to load and Display a PDF file stored in Firebase storage?

i could only find this article : https://medium.com/flutter-community/loading-pdf-file-from-firebase-storage-in-flutter-app-android-ios-web-743eef66ec4b

But it doesn’t work and makes no sense to me…

Please help me with a working solution!
i’ve been at this for days now

regards,
kad