[BUG]maxkb集成sqlbot生成柱状图显示无法加载

**SQLBot Version**
1.10.0
**Run Mode**
Is it running in a Docker container

**Describe the bug**
maxkb集成sqlbot生成柱状图失败

<img width="944" height="897" alt="Image" src="https://github.com/user-attachments/assets/0df438bc-3a9f-4bb7-8db5-c592a6fbf9fb" />
