进行截图时异常

[DHpie]

描述问题bug:
我使用 b64img, fmt = poco.snapshot(width=screen_size[1])进行截图时, 出现 hrpc.exceptions.RpcRemoteException 异常, 异常信息如下:

File "/usr/local/python3/lib/python3.7/site-packages/flybirds/core/plugin/plugins/default/screen.py", line 31, in screen_shot
   b64img, fmt = poco.snapshot(width=screen_size[1])
 File "/usr/local/python3/lib/python3.7/site-packages/poco/pocofw.py", line 433, in snapshot
   return self.agent.screen.getScreen(width)
 File "/usr/local/python3/lib/python3.7/site-packages/poco/drivers/android/uiautomation.py", line 75, in getScreen
   b64img = self.screen.getScreen(width)
 File "/usr/local/python3/lib/python3.7/site-packages/hrpc-1.0.9-py3.7.egg/hrpc/object_proxy.py", line 92, in __call__
   return self._client__.evaluate(self.__call_no_evaluate__(remote_obj_cache, *args))
 File "/usr/local/python3/lib/python3.7/site-packages/hrpc-1.0.9-py3.7.egg/hrpc/client.py", line 81, in evaluate
   raise RpcRemoteException(resp)
hrpc.exceptions.RpcRemoteException: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getHeight()' on a null object reference

|--   Remote Traceback   --|

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getHeight()' on a null object reference
   at com.netease.open.pocoservice.Screen.getScreen(Screen.java:40)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.netease.open.hrpc.backend.RpcServer.onRequest(RpcServer.java:171)
   at com.netease.open.hrpc.backend.RpcServer.serve(RpcServer.java:57)
   at fi.iki.elonen.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:840)
   at fi.iki.elonen.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:189)
   at java.lang.Thread.run(Thread.java:920)


|--   Remote Traceback end   --|

python 版本: python3.7

pocoui版本: 1.0.85

hrpc 版本: 1.0.9

设备:

• 型号: [谷歌原生模拟器]
• 系统: [ANDROID26(8.0)]