React global injection of mobx, problems encountered

react global injection mobx, code implementation passed in through Provider, embedded router. Cannot get the incoming store in the subcomponent

import React from "react"
import { observer,Provider,inject } from "mobx-react"
import Router from "@/routers"
import AppStore from "@/stores/app"

@observer
class App extends React.Component{
    render(){
        return (
            <Provider store={AppStore}>
                <Router/>
            </Provider>
        )
    }
}

export default App
The

code has been uploaded to github

Mar.29,2022

@inject(stores => {
  return {
    xxx: stores.xxx
  };
})
@observer
Menu