# X_CONFIG_KEY_UNREAD

## Means

`AppConfig` declares a key nothing in `packages/*/src` reads

## Typical cause

the shape three deleted fields had — `pwa.installPrompt`, `auth.afterSignInPath`, `ai.modelEnv` were each declared, defaulted, merged and read by nobody, so setting them did nothing and said nothing. A ratchet, because a key may be legitimately app-facing; a pin carries the sentence naming its reader, never a boolean

## Fix

`delete the key from config.ts and defaults(), or wire it, or pin it with the sentence that names its reader`

[CLI and verify](/error-codes#cli-and-verify)