[Bug Report] Theme editor not working

[rickycaron]

Element UI version

2.15.14

OS/Browsers version

chrome

Vue version

2.7.16

Reproduction Link

https://elementui.github.io/issue-generator/#/en-US

Steps to reproduce

1. edit a theme in https://element.eleme.cn/#/en-US/theme
2. error

What is Expected?

successfully editing theme

What is actually happening?

page report error and not working

[Galllarate]

Any news about this issue?

[webvs2]

官方现在停了主题服务，暂不可用。不过可以使用主题工具，如仍需图形化的配置，请移到讨论区交流方案。