Step to Reproduce

1. Create a new thought
2. Leave it empty
3. Create a new subthought underneath
4. Leave it empty
5. Tap Swap Parent

Current behavior

"Uncaught Error: Invalid path id. No thought found with id" red banner is shown

Expected behavior

User should not see red banner error message.
User should see the regular black alert at the bottom with user friendly message that swapping parent can not be done on empty thoughts