Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in C:\Apache24_x64\htdocs\ipad\vendor\psr\log\Psr\Log\NullLogger.php:13 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ipad\vendor\psr\log\Psr\Log\NullLogger.php on line 13