if no username just render it

index.php

···
 });
 
 Flight::route('/login', function(): void {
+  if (!array_key_exists('username', $_GET)) {
+    $latte = new Latte\Engine;
+    $latte->render('./templates/login.latte', array_merge(Flight::get('standardParams'), [
+      'mainClass' => 'form',
+      'ogtitle' => SITE_TITLE." | login",
+      'ogdesc' => SITE_DESC,
+      'ogimage' => '',
+      'ogurl' => 'https://'.SITE_DOMAIN.'/login'
+    ]));
+    die(1);
+  }
   $username = $_GET['username'];
   $bskyToucher = new BskyToucher();
   $userInfo = $bskyToucher->getUserInfo($username);