All fine building for device. This happens when trying to build for Xcode simulator:
Sep 14 13:47:27.186 ERROR: Builder failed: ld: warning: ignoring file /Users/Desktop/Q.app/.build/plugin.admob/GoogleMobileAds.framework/GoogleMobileAds, missing required architecture i386 in file /Users/Desktop/Q Games.app/.build/plugin.admob/GoogleMobileAds.framework/GoogleMobileAds (1 slices)
Sep 14 13:47:27.186 Undefined symbols for architecture i386:
15.5 Metal. Solar2D 3651. macOSBigSur 11.5.2