Calling -display has no effect


I’m having a problem with my app when i test it on my iphone 6s.
There is a line in my log message : <SKMetalLayer: 0x125d6ad90>: calling -display has no effect.
when i start the app.

But when i start the app on a 6s simulater it does not come up.

And my app works fine no problems and no errors?
I’m just worried that apple is gonna decline my app.

here is a screenshot i highlighted the line in log message.

Thank you for your help!