Can Wang 779932dcb0
Fix: graphrag, raptor can be null for api created kb issue (#8743)
### What problem does this PR solve?

When knowledgebase/dataset created by API, graphrag and raptor can be
null, and will trigger NoneType error when reach to this code, causing
chunking task not able to finish.

![image](https://github.com/user-attachments/assets/998a63e9-611b-4301-8808-24839a05be8a)

Proposed solution will result in None and pass the condition check
without error.

![image](https://github.com/user-attachments/assets/184374fb-e06a-46e6-b8ac-d66a3fd93b59)


### Type of change

-   Bug Fix (non-breaking change which fixes an issue)
2025-07-09 17:12:42 +08:00
..
2025-07-01 14:05:18 +08:00
2025-01-21 20:52:28 +08:00
2025-07-02 18:37:34 +08:00
2024-12-07 16:56:34 +08:00