# X_ISLAND_MODULE_DUPLICATED

## Means

An island chunk bundles one module more than once

## Typical cause

the island build shipped one framework module twice — one file under two path spellings, or a second @ultimat3/* copy — so its bytes and its module state are duplicated in the chunk

## Fix

`gh issue create --repo developerz-ai/ultimate --title "X_ISLAND_MODULE_DUPLICATED"` — paste this error's --json as the body: the framework bundled one of its own modules twice

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