Crashes when I try to share screen

    java.lang.RuntimeException: Stub!
        at org.apache.http.params.AbstractHttpParams.<init>(AbstractHttpParams.java:6)
        at org.apache.http.params.BasicHttpParams.<init>(BasicHttpParams.java:7)
        at com.yanzhenjie.andserver.CoreThread.createHttpParams(CoreThread.java:109)
        at com.yanzhenjie.andserver.CoreThread.run(CoreThread.java:175)