一旦我的手表应用程序启动，它就会崩溃并出现以下错误：
2017-08-17 13:59:54.304792-0300 watchOS4 Extension[11500:1617313] -[SPApplication _accessibilityInitialize]: unrecognized selector sent to instance 0x79e5b8f0
2017-08-17 13:59:56.173675-0300 watchOS4 Extension[11500:1617313] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[SPApplication _accessibilityInitialize]: unrecognized selector sent to instance 0x79e5b8f0'
*** First throw call stack:
(
0 CoreFoundation 0x015ae80d __exceptionPreprocess + 189
1 libobjc.A.dylib 0x00f22bcf objc_exception_throw + 49
2 CoreFoundation 0x0162f978 -[NSObject(NSObject) doesNotRecognizeSelector:] + 136
3 CoreFoundation 0x015322c4 ___forwarding___ + 1300
4 CoreFoundation 0x01531d8e _CF_forwarding_prep_0 + 14
5 UIAccessibility 0x19a13e2c __54+[UIAccessibilityLoader _accessibilityLoadSubbundles:]_block_invoke.338 + 44
6 libdispatch.dylib 0x05f990bf _dispatch_call_block_and_release + 15
7 libdispatch.dylib 0x05f9a42c _dispatch_client_callout + 14
8 libdispatch.dylib 0x05fa4e88 _dispatch_main_queue_callback_4CF + 1204
9 CoreFoundation 0x0157116e __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 14
10 CoreFoundation 0x0153677e __CFRunLoopRun + 3310
11 CoreFoundation 0x015357e5 CFRunLoopRunSpecific + 373
12 CoreFoundation 0x0153565a CFRunLoopRunInMode + 122
13 GraphicsServices 0x08fde249 GSEventRunModal + 71
14 GraphicsServices 0x08fde12e GSEventRun + 80
15 UIKit 0x01a402d1 UIApplicationMain + 148
16 libxpc.dylib 0x06350a67 _xpc_objc_main + 528
17 libxpc.dylib 0x063533a0 xpc_main + 158
18 Foundation 0x009543c5 -[NSXPCListener resume] + 185
19 PlugInKit 0x057be28b -[PKService run] + 799
20 WatchKit 0x001cd123 main + 160
21 libdyld.dylib 0x05ffdd41 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
SPApplication _accessibilityInitialize是什么意思？我还没有实现任何可访问性功能。
我正在运行 watchOS4 beta 6 和 XCode 9 beta 5