objective-c - linker command failed with exit code 1 error when running the code

Question

I copied a copy of his project code from a friend, but when I ran it, I got the error linker command failed with exit code 1 (use -vto see invocation),

Answer 1

Obviously, the path is wrong and the compiler did not find that folder.
Check whether the path is correct. If not, check whether the folder has been added to the project, and then check the Library Search Path to see if there is any setting error.

Answer 2

The address of the framework link is wrong

Delete AFNetwork from here and re-link it