fix(build): Fix netlify build

client/src/components/RedirectHome.js

@@ -1,7 +1,9 @@
 import { navigate } from 'gatsby';
 
 const Redirecthome = () => {
-  navigate('/');
+  if (typeof window !== 'undefined') {
+    navigate('/');
+  }
   return null;
 };
 

client/src/pages/certification.js

@@ -1,7 +1,7 @@
 import React, { Component } from 'react';
 import { Router } from '@reach/router';
 
-import Redirecthome from '../components/RedirectHome';
+import RedirectHome from '../components/RedirectHome';
 import ShowCertification from '../client-only-routes/ShowCertification';
 
 import './certification.css';
@@ -12,7 +12,7 @@ class Certification extends Component {
     return (
       <Router>
         <ShowCertification path='/certification/:username/:certName' />
-        <Redirecthome default={true} />
+        <RedirectHome default={true} />
       </Router>
     );
   }