Running in the latest safari iPhone browser I get the error:

failed to asynchronously prepare wasm: CompileError: WebAssembly.Module doesn't parse at byte 5: can't get Function local's type in group 1, in function at index 9 Aborted(CompileError: WebAssembly.Module doesn't parse at byte 5: can't get Function local's type in group 1, in function at index 9)