java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.drawable.Drawable.setColorFilter(android.graphics.ColorFilter)' on a null object reference
at android.support.v4.graphics.drawable.WrappedDrawableApi14.setColorFilter(WrappedDrawableApi14.java:125)
at android.graphics.drawable.Drawable.setColorFilter(Drawable.java:472)
at com.filestack.android.FsActivity.onCreateOptionsMenu(FsActivity.java:271)
at android.app.Activity.onCreatePanelMenu(Activity.java:2823)
at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:378)
at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:94)
at android.support.v7.app.AppCompatDelegateImpl$AppCompatWindowCallback.onCreatePanelMenu(AppCompatDelegateImpl.java:2549)
at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:94)
at android.support.v7.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:455)
at android.support.v7.app.ToolbarActionBar$1.run(ToolbarActionBar.java:56)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)