I'm trying to make a calculator but I keep getting the notification that I set "left" into something wrong. anybody know what it is and how to fix it? I've tried switching all text to the left but it didn't work.

The Left and Top properties were added to components as part of the introduction of the AbsoluteArrangement layout. This is not yet implemented in the iOS version, so if components are placed in one then they will get that error.