Fatal error: Uncaught Error: Class 'Psr\Log\AbstractLogger' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\error-handler\BufferingLogger.php:21
Stack trace:
#0 {main}
thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\error-handler\BufferingLogger.php on line 21