Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Support\Jsonable" not found in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Support/MessageBag.php:11
Stack trace:
#0 {main}
thrown in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Support/MessageBag.php on line 11