The embedding model for volcengine failed to be added.

A 500 internal server error was returned. We have reported this issue to the model provider, and their response is that it is caused by the model being offline.  [doc](https://www.volcengine.com/docs/82379/1350667?lang=zh)

<img width="447" height="678" alt="Image" src="https://github.com/user-attachments/assets/c805ee12-87aa-4ebc-af7a-b167a406317b" />