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Cannot execute task: the task has already been executed (a task can be executed only once)
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Cannot execute task: the task has already been executed (a task can be executed only once)
java.lang.IllegalStateException: Cannot execute task: the task has already been executed (a task can be executed only once)	at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:579)	at android.os.AsyncTask.execute(AsyncTask.java:535)	at com.app.ui.CitationFragment$1.onFinish(CitationFragment.java:179)	at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:127)	at android.os.Handler.dispatchMessage(Handler.java:102)	at android.os.Looper.loop(Looper.java:145)	at android.app.ActivityThread.main(ActivityThread.java:5944)	at java.lang.reflect.Method.invoke(Native Method)	at java.lang.reflect.Method.invoke(Method.java:372)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)