my website using firebase hosting is not excuted -_-;

im making videocall app with flutter and webrtc.

i want to host my website. so i use firebase hosting service. To test firebase hosting servce, i make a default flutter project and did below steps with firebase hosting guide

1. firebase login
2. firebase init
3. firebase deploy

so i make a https://jinweokgod.web.app/ i excute my server 127.0.0.1:1212 and i confirm excuting is well. but i enter https://jinweokgod.web.app/, i cant see anything..

this webpage is default flutter project source code

i spend 12 hour time because of this problem - -; please help me !