finds bug with custom client components when attempting to import webpack aliases

src/client/components/Routes.js

@@ -1,4 +1,4 @@
-import React, { useState, useEffect, Fragment } from 'react';
+import React, { useState, useEffect } from 'react';
 import {
   Route, Switch, withRouter, Redirect,
 } from 'react-router-dom';