Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/debug/BufferingLogger.php:21 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/debug/BufferingLogger.php on line 21