点击手机元素时报错：32001 Jsonrpc error、dumpWindowHierarchy

在进行手机元素点击时，会偶发性的遇到以下的报错，但是使用手机管理器进行一次连接之后验证一次元素就又不会报错了，同时也优化过点击失败之后重新连接手机的过程，但是仍然出现了以下报错：

-32001 Jsonrpc error: <java.lang.NullPointerException> data: java.lang.NullPointerException: Attempt to read from field 'int android.accessibilityservice.AccessibilityServiceInfo.flags' on a null object reference
at androidx.test.uiautomator.UiDevice.setCompressedLayoutHeirarchy(UiDevice.java:234)
at com.github.uiautomator.stub.AutomatorServiceImpl.dumpWindowHierarchy(AutomatorServiceImpl.java:295)
at com.github.uiautomator.stub.AutomatorServiceImpl.dumpWindowHierarchy(AutomatorServiceImpl.java:284)
at java.lang.reflect.Method.invoke(Native Method)
at com.googlecode.jsonrpc4j.JsonRpcBasicServer.invoke(JsonRpcBasicServer.java:467)
at com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleObject(JsonRpcBasicServer.java:352)
at com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleJsonNodeRequest(JsonRpcBasicServer.java:283)
at com.googlecode.jsonrpc4j.JsonRpcBasicServer.handleRequest(JsonRpcBasicServer.java:251)
at com.github.uiautomator.stub.AutomatorHttpServer.serve(AutomatorHttpServer.java:100)
at fi.iki.elonen.NanoHTTPD.serve(NanoHTTPD.java:2244)
at fi.iki.elonen.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:945)
at fi.iki.elonen.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:192)
at java.lang.Thread.run(Thread.java:930)
, method: dumpWindowHierarchy