returned nil from -traitCollection, which is not allowed in Xcode 11 Beta

Question

Assertion failure in UITraitCollection * _Nonnull returned nil from -traitCollection, which is not allowed? when I try to run Xcode 11 beta in ios 13 it crashed. I don\'t kn

Answer 1

Just simple put your code in main thread of UI update :

DispatchQueue.main.async
             {
          // Put your code here 
           }