Swift: UnsafeMutablePointer.deinitialize fatal error with negative count when appending to array

Question

The code below generates this error (appending to exporters):

fatal error: UnsafeMutablePointer.deinitialize with negative count

Answer 1

I have solved this type of issue like this way:

DispatchQueue.global(qos: .background).sync {
        //your code 
    }