How to fix compilation error in Objective-C?

Question

Objective-C

When compiling, it gives this error:
"
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
"
How to deal with this?

Answer 1

1. open xcode
2. on the panel at the top of the screen, click debug
3. select breakpoints
4. click create exception breakpoint
in this way you will see on which line the exception falls

Answer 2

It crashes here not during compilation (this is important), but at the start of the application.
There might be something wrong with the storyboard. Review carefully.