java.lang.ClassCastException: com.alibaba.fastjson.JSONObject cannot be cast to com.alibaba.fastjson.JSONArray #4

使用项目中的apk包，运行AndroidSampleTest抛出错误，
堆栈信息：
java.lang.ClassCastException: com.alibaba.fastjson.JSONObject cannot be cast to com.alibaba.fastjson.JSONArray at macaca.client.commands.Context.getContexts(Context.java:27) at macaca.client.MacacaClient.contexts(MacacaClient.java:143) at macaca.client.AndroidSampleTest.switchToWebView(AndroidSampleTest.java:140) at macaca.client.AndroidSampleTest.test_case_1(AndroidSampleTest.java:101)