# X_UI_DIFF_FILE_MISSING

## Means

`ui.diff` was handed a capture that is not on disk

## Typical cause

a path from an earlier session, a `.x/shot/` that was cleaned, or a typo in the slug

## Fix

`x shot / --json`, then diff the image path it answers — `ui.shot`'s own answer lists the file it wrote

[MCP and AI](/error-codes#mcp-and-ai)