java.lang.IllegalArgumentException: The date must not be null
        at org.joda.time.LocalDate.fromDateFields(LocalDate.java:242)
        at net.privacyeverywhere.util.StringUtils.getStringFromDate(StringUtils.java:41)
        at net.privacyeverywhere.ui.adapter.MailListAdapter.onBindViewHolder(MailListAdapter.java:208)
        at net.privacyeverywhere.ui.adapter.MailListAdapter.onBindViewHolder(MailListAdapter.java:48)
        at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6673)
        at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6714)
        at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5647)
        at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5913)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5752)
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5748)
        at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2232)
        at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1559)
        at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)
        at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)
        at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
        at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3529)
        at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:4082)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:606)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1191)
        at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:876)
        at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:895)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1171)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at com.android.internal.policy.DecorView.onLayout(DecorView.java:934)
        at android.view.View.layout(View.java:18878)
        at android.view.ViewGroup.layout(ViewGroup.java:5953)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2684)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2400)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1537)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7183)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:959)
        at android.view.Choreographer.doCallbacks(Choreographer.java:734)
        at android.view.Choreographer.doFrame(Choreographer.java:670)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:945)
        at android.os.Handler.handleCallback(Handler.java:751)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6776)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1518)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)