[Bug] Bug title 点击Tab 应用管理-提示词 出现空白页

Search before asking

• I had searched in the issues and found no similar issues.

Operating system information

Linux

Python version information

=3.11

DB-GPT version

main

Related scenes

• Chat Data
• Chat Excel
• Chat DB
• Chat Knowledge
• Model Management
• Dashboard
• Plugins

Installation Information

• Installation From Source

• Docker Installation

• Docker Compose Installation

• Cluster Installation

• AutoDL Image

• Other

Device information

Device:CPU

Models information

LLM:DeepSeek v4 flash

What happened

点击Tab 应用管理-提示词 出现空白页

What you expected to happen

能够正常查看提示词管理页。

How to reproduce

1. 点击左侧“应用管理”
2. 点击“提示词”Tab

Additional context

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!