[Bug Report] theme preview website download theme js error

[ElsaOOo]

Element Plus version

1.2.0-beta.1

OS/Browsers version

macOs 11.6 / chrome 94

Vue version

3.2.21

Reproduction Link

https://element-plus.github.io/theme-chalk-preview/#/zh-CN

Steps to reproduce

click download theme button , there is js error in console
点击下载主题，控制台报js error

What is Expected?

can download theme
可以正常下载自定义颜色的主题

What is actually happening?

can not download theme
不可以正常下载自定义颜色的主题

[element-bot]

Translation of this issue:

Element Plus version

1.2.0-beta.1

OS/Browsers version

macOs 11.6 / chrome 94

Vue version

3.2.21

Reproduction Link

https://element-plus.github.io/theme-chalk-preview/#/zh -CN

! image

Steps to reproduce

click download theme button , there is js error in console
Click the download topic and the console will report JS error

What is Expected?

can download theme

You can download custom color themes normally

What is actually happening?

can not download theme
Themes with custom colors cannot be downloaded normally

[Greasen]

请问解决了吗

[Bit0r]

请问应该如何修复它？