java.lang.NullPointerException: println needs a message

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Root Cause Analysis

  1. java.lang.NullPointerException

    println needs a message

    at android.util.Log.println_native()
  2. Android Platform
    Log.d
    1. android.util.Log.println_native(Native Method)
    2. android.util.Log.d(Log.java:139)
    2 frames
  3. com.tradesomev4.tradesomev4
    MainActivity$2.onChildAdded
    1. com.tradesomev4.tradesomev4.MainActivity.getAllAuctionData(MainActivity.java:136)
    2. com.tradesomev4.tradesomev4.MainActivity.access$100(MainActivity.java:66)
    3. com.tradesomev4.tradesomev4.MainActivity$2.onChildAdded(MainActivity.java:158)
    3 frames
  4. com.google.android
    zzajk$1.run
    1. com.google.android.gms.internal.zzahh.zza(Unknown Source)
    2. com.google.android.gms.internal.zzajh.zzctc(Unknown Source)
    3. com.google.android.gms.internal.zzajk$1.run(Unknown Source)
    3 frames
  5. Android Platform
    ActivityThread.main
    1. android.os.Handler.handleCallback(Handler.java:815)
    2. android.os.Handler.dispatchMessage(Handler.java:104)
    3. android.os.Looper.loop(Looper.java:194)
    4. android.app.ActivityThread.main(ActivityThread.java:5637)
    4 frames
  6. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:372)
    2 frames
  7. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
    2 frames