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An error occured while executing doInBackground()
java.lang.RuntimeException: java.lang.NullPointerException	at com.couchbase.lite.store.ForestDBStore.runInTransaction(ForestDBStore.java:301)	at com.couchbase.lite.Database.runInTransaction(Database.java:565)	at com.myapp.v3.misc.RecordsModifyTask.doInBackground(RecordsModifyTask.java:45)	at com.myapp.v3.misc.RecordsModifyTask.doInBackground(RecordsModifyTask.java:22)	at android.os.AsyncTask$2.call(AsyncTask.java:287)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)