Fatal error: Uncaught Error: Class "think\Exception" not found in C:\xampp\htdocs\SoftlibSite\vendor\topthink\framework\src\think\exception\ErrorException.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\SoftlibSite\vendor\topthink\framework\src\think\exception\ErrorException.php on line 23