xcode build error "Undefined symbols for architecture arm64:"

[任祥磊]

thank you for your project, i use it and change the teamID, but get these error.

and i find the resolution for this , i change the Architectures but not useful

can you help me to resolve this problem? thank you

[任祥磊]

I found the reason, because i change the program to use arc mode, finally, i set the Build Phases->Compile Sources -> SvUDIDTools.m add "-fno-objc-arc" param to resolute this question. thanks