static serving under path

.env.development

@@ -1,2 +1,2 @@
-REACT_APP_API_HOST="http://localhost:3000/toast/"
-REACT_APP_API_DIR="/toast/"
+REACT_APP_API_HOST="http://localhost:3000/"
+REACT_APP_API_DIR="/"

src/index.tsx

@@ -2,10 +2,10 @@ import * as React from 'react';
 import * as ReactDOM from 'react-dom';
 import App from './App';
 import './index.css';
-import registerServiceWorker from './registerServiceWorker';
+// import registerServiceWorker from './registerServiceWorker';
 
 ReactDOM.render(
   <App />,
   document.getElementById('root') as HTMLElement
 );
-registerServiceWorker();
+// registerServiceWorker();