Fatal error: Uncaught Error: Class "think\db\exception\PDOException" not found in C:\xampp\htdocs\RegnowSite\vendor\topthink\think-orm\src\db\exception\DuplicateException.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\RegnowSite\vendor\topthink\think-orm\src\db\exception\DuplicateException.php on line 19