# terrain-dem-missing

> Talos next · Since next

An `import.dem` op's DEM file cannot be read, or its SHA-256 is not the op's `sha256` (the file changed since it was imported). Emitted by the terrain evaluator when it loads the file (validation reads no files). The message names the op and the file; re-import the DEM or clear `sha256`.

| | |
|---|---|
| Severity | `error` |
| Source | `contract` |
| Offers a fix patch | no |

## Components it can refuse

- `terrain`

## Since / changed

See the version chips above and what changed.