execute hexo generate throw error

[onweer]

ERROR Asset render failed: styles/highlight.css
Error: /home/leo/Documents/blog/themes/chan/source/styles/highlight.styl:17:31
13| highlight-purple = #8959a8
14|
15| $code-block
16| background: highlight-background
17| margin: 0 article-padding * -1
-------------------------------------^
18| padding: 15px article-padding
19| border-style: solid
20| border-color: color-border

cannot perform article-padding * -1
at "$code-block" (/home/leo/Documents/blog/themes/chan/source/styles/highlight.styl:14:27)

[denjones]

This file is reused from the default theme landscape.

This ERRORs won't appear in my environment. What is your environment?

And also try building with landscape theme.