ios - Swift: Apple Mach-O Linker Error -

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i'm working on parse/facebook login keeps giving me following error:

undefined symbols architecture x86_64: "_fbsdkaccesstokendidchangenotification", referenced from:

there on 60+ such errors, not sure why appearing since code working in different project. copying on code , started happening, advice?

check if have import part copied new project well, dependencies.

when said undefined symbols, means function _fbsdkaccesstokendidchangenotification can't found while compiling, means correspond framework/sdk/library not there.


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