Angular hosting to firebase Problem

i don’t know what’s wrong with firebase, when i click Hosting URL: https://ngtodolist-6e5ac.web.app
only see this page

you need add your project at end of url, https://ngtodolist-6e5ac.web.app/index.html

i add the index.html, the angular will show up.

maybe some configuration is wrong??

ref
https://www.youtube.com/watch?v=UNCggEPZQ0c&ab_channel=BabatundeLamidi

https://www.youtube.com/watch?v=dPIyS5R6lHU&ab_channel=SameerSaini