* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
frame #0: 0x0000000107a7be3e libsystem_kernel.dylib`__pthread_kill + 10
frame #1: 0x0000000107ab5150 libsystem_pthread.dylib`pthread_kill + 333
frame #2: 0x00000001077360eb libsystem_c.dylib`abort + 127
frame #3: 0x000000010815599b GraphicsServices`_GSEventInitializeApp + 713
frame #4: 0x00000001048a391d UIKit`_UIApplicationMainPreparations + 781
frame #5: 0x00000001048a35a6 UIKit`UIApplicationMain + 111
frame #6: 0x0000000102106bf7 Small Talk`main at AppDelegate.swift:16
frame #7: 0x0000000107663d81 libdyld.dylib`start + 1 *