# X_TEST_ISLAND_STATE_STUB_INVALID

## Means

an island route stub is not `<METHOD> <pathname>`

## Typical cause

`match` is a `<METHOD> <pathname>` PREFIX; a bare path or a lowercase verb stubs nothing, the component fetches for real, the sealed network refuses it, and the picture shows an error state nobody declared

## Fix

write `{ match: 'GET /api/settings', respond: { kind: 'json', body: {} } }`

[Testing](/error-codes#testing)