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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 GitHub by BishopGIS
, 1 year ago
println needs a message
via Stack Overflow by Sun
, 2 years ago
via Stack Overflow by kom
, 2 years ago
println needs a message
via by Unknown author, 2 years ago
via Stack Overflow by mdanishs
, 2 years ago
java.lang.NullPointerException: println needs a message	at android.util.Log.println_native(Native Method)	at android.util.Log.d(	at	at	at	at com.nextgis.maplib.datasource.ngw.SyncAdapter.sync(	at com.nextgis.maplib.datasource.ngw.SyncAdapter.onPerformSync(	at	at android.content.AbstractThreadedSyncAdapter$