Fatal error: Uncaught TypeError: property_exists(): Argument #1 ($object_or_class) must be of type object|string, null given in C:\wwwroot\www.snailwater.com\ERPSITE\dal\column.php:47 Stack trace: #0 C:\wwwroot\www.snailwater.com\ERPSITE\dal\column.php(47): property_exists() #1 C:\wwwroot\www.snailwater.com\ERPSITE\controller\columnController.php(10): dal\column::GetColumnInfo() #2 C:\wwwroot\www.snailwater.com\ERPSITE\core\app.php(37): columnController->index() #3 C:\wwwroot\www.snailwater.com\ERPSITE\index.php(14): core\app::run() #4 {main} thrown in C:\wwwroot\www.snailwater.com\ERPSITE\dal\column.php on line 47