# Required dependency is unavailable

> Canonical HTML: https://screenrig.ai/problems/dependency-unavailable/

HTTP 500 · `dependency_unavailable`

## What it means

The API answers with HTTP 500 Internal Server Error and an `application/problem+json` document when the condition is Required dependency is unavailable. The document's `type` member is `https://screenrig.ai/problems/dependency-unavailable`, the address of this page, and its `code` member is `dependency_unavailable`.

## What to do

A service this request needs is briefly unavailable. Retry the same request after a short wait (Retry-After when present).

When the handler sets no more specific value, the response carries `Retry-After: 5`.

## Player action

The Player action class is `retry_backoff`: Retry the same request on the backoff schedule, never sooner than Retry-After.

## Reference

| Field | Value |
| --- | --- |
| Code | `dependency_unavailable` |
| HTTP status | `500 Internal Server Error` |
| Type | `https://screenrig.ai/problems/dependency-unavailable` |
| Player action | `retry_backoff` |
| Retryable | `yes` |
| Retry-After | `5 seconds` |

- [All problem types](https://screenrig.ai/problems/)
- [API reference](https://screenrig.ai/docs/api/#problems)
- [Problem registry YAML](https://screenrig.ai/docs/api/problems.yaml)