bug众多，一旦查看例图立刻异常，白白消耗token

[wxc45]

Issue Description：

So many bugs—1–just viewing the example images causes system errors, wasting tokens for nothing. The example images are merely simple scatter plots.

Steps to Reproduce

Expected Behavior

Actual Behavior

Screenshots / Screen Recordings

Operating System

Current Qoder Version (Menu → About Qoder → Copy)