> For the complete documentation index, see [llms.txt](https://catenoid-support.gitbook.io/developer-welcome-kit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://catenoid-support.gitbook.io/developer-welcome-kit/undefined-2/undefined/8479.md).

# 8479 에러

* 중복 차단된 동영상 컨텐츠 접속 시 발생할 수 있습니다. DRM 혹은 보안 정책 상 Kollus Player 실행이 가능한 디바이스 대수가 한정되어 있을 수 있습니다. 가급적 주로 사용하시는 디바이스를 통해서 만 컨텐츠를 재생해주시기 바라며, 아래와 같은 메세지가 보일 경우 컨텐츠 제공사의 고객센터로 연락하시기 바랍니다.

<figure><img src="/files/ZWANEZ8HpOVbYTmBQ92f" alt=""><figcaption></figcaption></figure>


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://catenoid-support.gitbook.io/developer-welcome-kit/undefined-2/undefined/8479.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.