Flutter error in ios simulator

I’m getting a PlatformException(3840, The data couldn’t be read because it isn’t the correct format., null, null) error.

I have this is my main.dart

Future main() async {
    bool isValidLogin = await Backendless.userService.isValidLogin();

Removing this line resolves the error. Running on ios simulator with ios version 14.6.

Hello @jp19344

Have you run Backendless.initApp as described here: Client-side Setup - Backendless SDK for Flutter API Documentation ?

Could you please provide the entire error stack-trace?

Regards, Vlad