i tried to start your demo and ....

got this erros in my debug console: -> and just got an empty white screen with mapbox logo....

**2019-12-06 15:51:02.995087+0100 MapboxSwiftUIDemo[487:29352] Failed to make complete framebuffer object 8cd6**
2019-12-06 15:51:09.938388+0100 MapboxSwiftUIDemo[487:29352] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
""
)

Will attempt to recover by breaking constraint

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in may also be helpful.

Start by running the demo and reproducing the empty white screen while watching the debug console. The issue provides no file, test, or entry point, so trace the reported framebuffer and layout-constraint errors to their source. Done means the demo launches with the map displayed and without the reported failure.

Written by the indexing model from the issue text.