Undefined symbols _OBJC_CLASS_$_FPPopoverController

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I use FPPopover on SWIFT.
but it display error is as follows:

Undefined symbols for architecture x86_64(arm64):
"OBJC_CLASS$_FPPopoverController", referenced from:
__TMaCSo19FPPopoverController in ViewController.o
ld: symbol(s) not found for architecture x86_64(arm64)
clang: error: linker command failed with exit code 1 (use -v to see invocation)

How can i do?