fix{SyntaxError: 'async with' outside async function]

[Lucas-TY]

🤔 What is the nature of this change?

a patch for https://github.com/OpenBMB/AgentVerse/issues/134

• [ ] New feature
• [x] Fix bug / bug
• [ ] Style optimization
• [ ] Code style optimization
• [ ] Performance optimization
• [ ] Build optimization
• [ ] Website, documentation, demo improvements
• [ ] Refactor code or style
• [ ] Test related
• [ ] Solved proposed issues
• [ ] Other

🔗 Related Issue

(Describe the source of related requirements, such as the related issue discussion link. Example: close #123, close #456.)

💡 Background or solution

(The specific problem solved.)

📝 Changelog

(Describe changes from the user side, and list all potential break changes or other risks.)