Record for UID is null?

[pnemonic78]

Caused by java.lang.IllegalArgumentException: the bind value at index 1 is null
       at android.database.sqlite.SQLiteProgram.bindString(SQLiteProgram.java:168)
       at android.database.sqlite.SQLiteProgram.bindAllArgsAsStrings(SQLiteProgram.java:204)
       at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:49)
       at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1712)
       at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1559)
       at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1430)
       at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1598)
       at org.gnucash.android.db.adapter.DatabaseAdapter.fetchRecord(DatabaseAdapter.java:514)
       at org.gnucash.android.db.adapter.AccountsDbAdapter.getSimpleRecord(AccountsDbAdapter.java:1403)
       at org.gnucash.android.ui.transaction.TransactionsActivity.onCreate(TransactionsActivity.java:291)
       at android.app.Activity.performCreate(Activity.java:8305)
       at android.app.Activity.performCreate(Activity.java:8284)
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1417)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3626)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3782)
       at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101)
       at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
       at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2307)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:201)
       at android.os.Looper.loop(Looper.java:288)
       at android.app.ActivityThread.main(ActivityThread.java:7872)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)