So I have created a time slider Instant app from a time enabled web map. Now the thing is as you can see there's this `No Time Extent` warning on the slider. This warning goes away when I drag the slider to start.
Three questions:
1. How can I make this warning go way?
2. What's causing this warning?
3. How can I make the slider default to the start?


Warning goes away when I drag the slider to the start:

Slider settings in the web map:
