Login with Facebook crash only on iOS (solved)

Hello!

I'm facing some problems with login with facebook account in my app (Rad Studio Berlin 10.1).

I create a form and put a TWebBrowser to get AccessToken from Facebook. Once i got AccessToken, i close webbrowser and i execute a RestRequest passing Token as parameter.

It's working 100% on Android. But, when i try iOS, my app crash when i execute RESTRequest1.Execute;

Any help, please?

Tks.