[BUG] 【智能问数】图表渲染失败

[AXholic]

SQLBot Version
1.2.1
Run Mode
Is it running in a Docker container or running from source code?

Describe the bug
A clear and concise description of what the bug is.
问题提问“enterprise_nature 为 地炼 的石油焦最近30天行情走势 生成趋势图”,渲染图表失败，偶尔会出来图表

正常情况：

SELECT p.model_name AS model_name,
DATE_FORMAT(p.date, '%Y-%m-%d') AS price_date,
p.price AS price
FROM zs_news.petroleum_data p
WHERE p.enterprise_nature = '地炼'
AND p.date >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
AND p.del_flag = 0
ORDER BY p.date ASC
LIMIT 1000
数据库版本 mysql5.7
并且在dify中调用sqlbot的mcp 也会出现因为这个原因超时的情况