warning in ./node_modules/Vuex/dist/vuex.esm.js

The project I'm testing is working fine, but after running npm run dev on my project, I get this warning message:

 WARNING  Compiled with 1 warnings                                                                                                                                           17:06:47

 warning  in ./node_modules/Vuex/dist/vuex.esm.js

There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:
* /Users/me/code/vue/vuex-test/node_modules/Vuex/dist/vuex.esm.js
    Used by 1 module(s), i. e.
    /Users/me/code/vue/vuex-test/node_modules/babel-loader/lib/index.js!/Users/me/code/vue/vuex-test/node_modules/vue-loader/lib/selector.js?type=script&index=0!/Users/me/code/vue/vuex-test/src/components/Test.vue
* /Users/me/code/vue/vuex-test/node_modules/vuex/dist/vuex.esm.js
    Used by 1 module(s), i. e.
    /Users/me/code/vue/vuex-test/node_modules/babel-loader/lib/index.js!/Users/me/code/vue/vuex-test/src/store/store.js

It's caused by the line import Vuex from 'vuex' in my ./store/store.js file which is called by import store from './store/store' in my main.js.

Is it a bug in Vuex module or is there a way I can fix it in my code ?