Expo not loading app icon “No icon is defined in the Expo config.”

my app.json

{
  "expo": {
    "name": "myapp-native",
    "slug": "myapp-native",
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    

I ran npx expo prebuild
It outputs a warning like this
» ios: icon: No icon is defined in the Expo config.

I searched the expo discord. Not a single other soul has encountered this warning, apparently. Searching it on quotes on google returns nothing either. I’m at a complete loss. The icon just will not appear in a dev build, ad hoc, or anything.

Am desperate for some help.