_vue2.default is undefined

[muisit]

I created a new vue3 CLI project

vue create new-project
vue add vuex
vue add router
vue add element

I select to import a different locale.

When I open the index page, I get this '_vue2.default is undefined' error. It seems to be inside Element, which uses a _interopRequireDefault function to discriminate between transpiled and native modules. However, the Vue 3 export apparently does not export a default (anymore).