# X_ASYNC_CONTEXT_UNAVAILABLE

## Means

async context unavailable

## Typical cause

`node:async_hooks` is stubbed to `{}` in this runtime, so nothing can be made ambient — a browser bundle

## Fix

the scope is server-only: open it in `apps/web/server.ts` or a route handler, and keep every module that opens one out of the import graph of a client island entry

[Core and runtime](/error-codes#core-and-runtime)