firebase all domains redirect old domain

Question

1. while setting dns www.mydomain.com, something was wrong. and i delete my all custom domains

2. but my default domains(web.app, firebaseapp.com) redirected my old custom domain. with this error message

3. so, i register new custom domain but this error message

4. i see this problem 2 days ago

5. and my firebase.json file

{
  "hosting": {
    "public": "build",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}