Fatal error: Uncaught Error: Class "Brick\Math\Internal\Calculator" not found in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\brick\math\src\Internal\Calculator\NativeCalculator.php:15 Stack trace: #0 {main} thrown in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\brick\math\src\Internal\Calculator\NativeCalculator.php on line 15