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GoogleConversionPing Undefined Symbol

I am developing an iOS application. Also used is GoogleConversionTrackingSDK. I added to the project; Files GoogleConversionPing.h, libGoogleAnalyticsServices.a. But I get an error

Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_GoogleConversionPing", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
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1 answer

I think they do not compile on arm64, so if you are not using a newer version of googleTracking, you need to remove arm64 from Valid architecturesinbuild settings

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