Failed to start remote service on device problem in Xcode

I created a Flutter app and now I'm trying to run it through Xcode on my real iPhone, but after the installation finishes, I face the following problem:

Also when I try to run the application on my real phone, after clicking on the application icon, a white screen appears, and then the application closes directly.

macOS 10.15.3

iOS 14.2

Xcode 11.7

Also I was make a trust to app in phone.

Does anyone know the reason for this problem?

This problem maybe because of two reasons:

First: Xcode 11.7 doesn't have support files for iOS 14 you can download it from here https://github.com/filsv/iPhoneOSDeviceSupport

Second: I have this problem now and I couldn't fix it.. but I have iPhone with iOS 14.2 and iPad with iOS 14 so the problem was just on the iPhone but after I updated the iPad with iOS 14.2 it happened with it.. so the problem maybe because of the iOS 14.2 so we have to wait for the update or because of the Xcode 11 version and we have to download the Xcode 12 version..

I hope we can find a solution quickly...