Why does the application complain about the AppDelegate?

Question

Apple Xcode

I'm new to Swift and wanted to update the content of a tableView on swipe down. Initially, everything worked well, but now it swears at:

class AppDelegate: UIResponder, UIApplicationDelegate

Whole error:

2015-09-14 23:11:37.122 test2[727:209741] -[test2.ViewController test:]: unrecognized selector sent to instance 0x14ee0a650
2015-09-14 23:11:37.130 test2[727:209741] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[test2.ViewController test:]: unrecognized selector sent to instance 0x14ee0a650'
*** First throw call stack:
(0x1831ac22c 0x194e200e4 0x1831b32f4 0x1831b00a8 0x1830b296c 0x187c5d1ec 0x187c462c8 0x187d960e0 0x1006a8fd4 0x1006a8f94 0x1006b3678 0x1006a8f94 0x1006c0848 0x1006ab1c0 0x1006ad6f4 0x183163544 0x1831615ec 0x18308cf74 0x18caef6fc 0x187c8ed94 0x10010d464 0x1954caa08)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

Even if I refer to the empty "test" function, it's the same. It means that the content of the function is empty.
Maybe I created a link somewhere and the program accesses it, but it doesn't exist. Or what? Help solve the problem.

Answer 1

The problem says that you call the test method with some parameter, on an object that does not have such a method. Let's take a closer look at the code and look for the error.