Hi Shankshank,
I get back to this because I had to find a solution with the new release.
It turns out the problem is a bit tricky. PogressEvent is defined on Windows and Android.
In iOS, ProgressEvent is defined except in one class. Don't know why.
I do have a class called ProgressEvent but it didn't create problems before.
Anyway I had to find a quick fix so I replaced ProgressEvent with its value ("progress") in the problematic class and everything was fine.
Just to let you know.
Best
