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  1. Thread.run() has thrown a JSONException
    Java Runtime
    0
    0
    0
  2. JSONObject.getJSONObject() has thrown a JSONException
    json-lib
    2
    4
    2

Your stack trace compared to the selected pattern

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net.sf.json.JSONException: JSONObject["useWrapper"] is not a JSONObject.
76 matching frames hidden
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:724)

External results for this pattern (2)