Build Errors

[mariosm]

Hello,

I am getting the following errors trying to build my app.

Undefined symbols for architecture arm64:
"OBJC_CLASS$_WeixinTimelineActivity", referenced from:
objc-class-ref in GalleryViewController.o
"OBJC_CLASS$_WeixinSessionActivity", referenced from:
objc-class-ref in GalleryViewController.o
ld: symbol(s) not found for architecture arm64

Any help?
Thanks