router-view/ router-link cannot work

[eric000]

Version

4.0.0-rc.6

Reproduction link

http://none

Steps to reproduce

start run script

What is expected?

router-view/ router-link normal

What is actually happening?

const RouterView = RouterViewImpl;
// warn against deprecated usage with &
// due to functional component being no longer eager in Vue 3
function warnDeprecatedUsage() {
const instance = vue.getCurrentInstance();
const parentName = instance.parent && instance.parent.type.name;
.....

TypeError: Cannot read property 'parent' of null

---

const RouterLinkImpl =
.....
setup(props, { slots, attrs }) {
const link = vue.reactive(useLink(props));
const { options } = vue.inject(routerKey);

Cannot destructure property 'options' of 'vue.inject(...)' as it is undefined.

[posva]

I can't check anything without a repro: https://new-issue.vuejs.org/?repo=vuejs/vue-router-next#why-repro