Cannot read properties of undefined (reading 'use') vuex
import Vue from 'vue'
import Vuex from 'vuex'
import post from './modules/post'
Vue.use(Vuex)
export default new Vuex.Store({
modules: {
post
}
})
You probably have version problem in your VueX which is under version 4. Try to uninstall and add version 4
npm uninstall vuex
npm i vuex@4.0.0