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    Thrown when an application is trying to use or access an object whose reference equals to null. In this case, the log message cannot be null.

Solutions on the web

via Coderanch by simone giusti, 1 year ago
An error occurred while executing doInBackground()
via GitHub by billmeek
, 1 year ago
An error occurred while executing doInBackground()
via GitHub by Neamar
, 1 year ago
An error occurred while executing doInBackground()
via GitHub by sarvajeet294
, 7 months ago
An error occurred while executing doInBackground()
via GitHub by AndroidDeveloperLB
, 3 weeks ago
An error occurred while executing doInBackground()
via GitHub by Madis0
, 8 months ago
An error occurred while executing doInBackground()
java.lang.NullPointerException: println needs a message	at android.util.Log.println_native(Native Method)	at android.util.Log.e(Log.java:232)	at com.rts.dcmote.dcmote.WifiAP.setWifiApEnabled(WifiAP.java:139)	at com.rts.dcmote.dcmote.WifiAP.access$000(WifiAP.java:19)	at com.rts.dcmote.dcmote.WifiAP$SetWifiAPTask.doInBackground(WifiAP.java:273)	at com.rts.dcmote.dcmote.WifiAP$SetWifiAPTask.doInBackground(WifiAP.java:217)	at android.os.AsyncTask$2.call(AsyncTask.java:295)	at java.util.concurrent.FutureTask.run(FutureTask.java:237)	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)	at java.lang.Thread.run(Thread.java:818)