fix post form

app/services/UserService.php

@@ -48,7 +48,7 @@ class UserService
     {
         foreach (User::all()->toArray() as $user) {
 
-            $userArr[$user['id']] = $user['username'];;
+            $userArr[$user['id']] = $user['username'];
         }
         if (!empty($userArr)) {
             return $userArr;