"export 'createStore' was not found in 'vuex' code example

Example 1: "export 'createStore' was not found in 'vuex'

You've installed the Vuex version 3.x by running npm install --save vuex you should uninstall it npm uninstall --save vuex then install the version 4 which is compatible with vue 3 by running the following command :
  npm install --save vuex@next

Example 2: "export 'createStore' was not found in 'vuex'

You've installed the Vuex version 3.x by running with:
  npm install --save vuex 
  you should uninstall it with : 
  npm uninstall --save vuex 
  then install the version 4 which is compatible with vue 3 
  by running the following command :
  
  npm install --save vuex@next