new attempt

src/App.js

@@ -32,7 +32,7 @@ import {BrowserRouter, Switch, Route} from 'react-router-dom';
 import { Store } from './Store'
 import TermsPage from './Pages/TermsPage.js'
 import PublicationPermissionsPage from './Pages/PublicationPermissionsPage.js'
-
+import LoginCallbackHandler from './Components/LoginCallbackHandler.js'
 
 export default function App(){
   // eslint-disable-next-line
@@ -77,7 +77,7 @@ export default function App(){
         <Route path="/termos-publicar-recurso" component={TermsPage}/>
         <Route path="/permission" component={PublicationPermissionsPage}/>
         {/*<Route path="termos-de-uso#publicacoes-de-usuario" component={}*/}
-
+        <Route path="/omniauth/google_oauth2/callback" component={LoginCallbackHandler}/>
 
       	<Route path="/termos" component={UserTerms}/>
         <Route path="/teste" component={Teste}/>

src/Components/LoginCallbackHandler.js

+import React from 'react'
+
+export default function CallbackHandler (props) {
+    useEffect(() => {
+        console.log(window.location)
+    }, [])
+    return (
+        <h1 style={{fontSize : "28px"}}>TESTE</h1>
+    )
+}