java.lang.NullPointerException

Attempt to invoke virtual method 'void java.util.concurrent.locks.ReentrantLock.lock()' on a null object reference

Samebug tips0

There are no available Samebug tips for this exception. If you know how to solve this issue, help other users by writing a short tip.

Don't give up yet. Paste your full stack trace to get a solution.

Solutions on the web21064

  • Attempt to invoke virtual method 'void java.util.concurrent.locks.ReentrantLock.lock()' on a null object reference
  • via Apache's JIRA Issue Tracker by Mark Harding, 6 months ago
    Attempt to invoke virtual method 'void org.apache.cordova.CallbackContext.success(java.lang.String)' on a null object reference
  • via JIRA by lvyunxiao, 1 year ago
    Attempt to invoke virtual method 'void org.apache.cordova.CallbackContext.sendPluginResult(org.apache.cordova.PluginResult)' on a null object reference
  • Stack trace

    • java.lang.NullPointerException: Attempt to invoke virtual method 'void java.util.concurrent.locks.ReentrantLock.lock()' on a null object reference at com.qualcomm.VuforiaMedia.VideoPlayerHelper.unload(VideoPlayerHelper.java:343) at com.unity3d.player.UnityPlayer.nativeRender(Native Method) at com.unity3d.player.UnityPlayer.a(Unknown Source) at com.unity3d.player.UnityPlayer$b.run(Unknown Source)

    Write tip

    You have a different solution? A short tip here would help you and many other users who saw this issue last week.

    Users with the same issue

    You’re the first here who have seen this exception.