Hello
I got Xcode9 Beta and it crashes on this code - isValidUserToken()
I did update on SDK but still crashes.
Please try and check ^^;;
if (backendless?.userService.isStayLoggedIn)! {
I’ve checked this issue and it works with Xcode 9 Beta 3. But I highly recommend you to use the stable version of Xcode 8 until Xcode 9 is released out of beta.