Unable to use element-plus with vitepress: works in dev mode, but not after build

[akil-rails]

Refer #1164.

After upgrading to the latest versions of vitepress/vue, the built site fails to load the CSS, the build also returns a warning

✓ building client + server bundles...
⠋ rendering pages...[Vue warn]: Component <Anonymous> is missing template or render function.
[Vue warn]: Component <Anonymous> is missing template or render function.
[Vue warn]: Component <Anonymous> is missing template or render function.
[Vue warn]: Component <Anonymous> is missing template or render function.
✓ rendering pages...

Any idea on how to resolve this?

Reproducisble sample is at https://github.com/akil-rails/vitepress-with-element-plus

[MikeCZ23]

same. in localhost works, on github no