Fatal error: Uncaught Error: Class "Brick\Math\BigNumber" not found in C:\xampp\htdocs\my-app\my-new-app\vendor\brick\math\src\BigInteger.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\my-app\my-new-app\vendor\brick\math\src\BigInteger.php on line 23