I am also getting this with a brand new Independent watchOS App project with Xcode 12.3 and targeting watchOS 7.2
2020-12-22 16:48:51.111294-0800 redlightgreenlight WatchKit Extension[66073:1532791] [default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
2020-12-22 16:48:51.111800-0800 redlightgreenlight WatchKit Extension[66073:1532791] [default] lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.