Error when dismissing view controller

Question

Getting an error when dismissing a view controller, not seen anything like it before, and not much about it on the internet.

heres the error: * Assertion failur

Answer 1

If someone is having Assertion Failure issue then here is the solution for Swift 3:

OperationQueue.main.addOperation{
    
}

Tested On: Xcode 8.3.2 and Swift 3.1