手机：iphone 4s
框架：ios appium
我司的 apk 用手机点击确认支付，进入支付宝，想再去点击 返回 “支付宝” 按钮，无法点击，appium 的服务器报错信息如下

info: [IOS_SYSLOG_ROW ] Oct 27 14:01:16 iPhone MobileGestaltHelper[84] <Error>: libMobileGestalt MobileGestalt.c:281: server_access_check denied access to question UniqueDeviceID for pid 613

info: [IOS_SYSLOG_ROW ] Oct 27 14:01:16 iPhone ScriptAgent[613] <Error>: libMobileGestalt MobileGestaltSupport.m:151: pid 613 (ScriptAgent) does not have sandbox access for re6Zb+zwFKJNlkQTUeT+/w and IS NOT appropriately entitled

info: [IOS_SYSLOG_ROW ] Oct 27 14:01:16 iPhone ScriptAgent[613] <Error>: libMobileGestalt MobileGestalt.c:542: no access to UniqueDeviceID (see <rdar://problem/11744455>)
info: [debug] [INST] 2016-10-27 06:01:16 +0000 Debug: Got new command 125 from instruments: au.tapById('42')
info: [debug] [INST] 2016-10-27 06:01:16 +0000 Debug: evaluating au.tapById('42')
info: [debug] [INST] 2016-10-27 06:01:16 +0000 Debug: UIAButton.tap()

info: --> GET /wd/hub/status {}

info: [debug] Responding to client with success: {"status":0,"value":{"build":{"version":"1.3.6","revision":"004f52f249d3513809e7d0734d9205d1fec19f8e"},"isShuttingDown":false},"sessionId":"07b6e624-87fc-46ca-8f6c-417047db4250"}
info: <-- GET /wd/hub/status 200 1.398 ms - 178 {"status":0,"value":{"build":{"version":"1.3.6","revision":"004f52f249d3513809e7d0734d9205d1fec19f8e"},"isShuttingDown":false},"sessionId":"07b6e624-87fc-46ca-8f6c-417047db4250"}

info: [IOS_SYSLOG_ROW ] Oct 27 14:01:34 iPhone thalassa[612] <Warning>: CoreAnimation: warning, deleted thread with uncommitted CATransaction; set CA_DEBUG_TRANSACTIONS=1 in environment to log backtraces.

info: [IOS_SYSLOG_ROW ] Oct 27 14:02:01 iPhone thalassa[612] <Warning>: CoreAnimation: warning, deleted thread with uncommitted CATransaction; set CA_DEBUG_TRANSACTIONS=1 in environment to log backtraces.