[Bug Report] After clicking to view the official theme, there is a pop-up error message stating that the service is not available (503)

[l462227502]

Element UI version

2.15.14

OS/Browsers version

Microsoft Edge 版本 113.0.1774.50 (正式版本) (64 位)

Vue version

2.7.16

Reproduction Link

jsfiddle

Steps to reproduce

https://element.eleme.cn/#/zh-CN/theme，Click to view the official theme on this page, and after redirecting to the page, it will show that 503 service is not available

What is Expected?

No error reported

What is actually happening?

No error reported