调用WebAssembly.instantiate()报expected magic 错是为什么？

worker uncaught third Error (in promise) 

 WebAssembly.instantiate(): expected magic word 00 61 73 6d, found ab ff ff 00 @+0 

 CompileError: WebAssembly.instantiate(): expected magic word 00 61 73 6d, found ab ff ff 00 @+0(env: macOS,mp,1.05.2103192; lib: 2.16.0)

P.S.是在worker中报错，在主线程中不报错!