xcode - AppDelegate unknown issue that allows to build app but then crashes it, how to fix? -


i'm new @ coding swift language , developing ios , os x languages in general. writing simple program, know basic features, syntax, etc of language, , got weird problem in appdelegate.swift file of project:

enter image description here

then tried make empty app, , reinicialize xcode, neither of these worked. started blank new project , kept having error. reinstalled xcode , create new projects, same problem hasn`t let me work since then!!

can me please? know might ridiculous fix, don`t know how.

any great.

thanks.

i had same problem once , guess kind of bug in xcode. disabled global breakpoints toggle global breakpoint state(blue arrow symbol in lower pane) , press continue execution.


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