# X_ASSET_MISSING

## Means

a page names a site asset the app does not have

## Typical cause

`asset('assets/…')` names a file that is not under `apps/<app>/site/assets/`, or a path outside that tree (`..`, an unsupported extension). Thrown while the page renders, so `x build --target static` fails on it

## Fix

add the file under `apps/web/site/assets/`, or correct the path passed to `asset()`; then `x build --target static`. Details: [Static Assets](/static-assets)

[Routes, render and budgets](/error-codes#routes-render-and-budgets)