Warning: require_once(wp-load.php): Failed to open stream: No such file or directory in /var/www/html1/wp-content/plugins/salon-booking-system/test-concurrent-booking.php on line 18

Fatal error: Uncaught Error: Failed opening required 'wp-load.php' (include_path='.:/usr/share/php') in /var/www/html1/wp-content/plugins/salon-booking-system/test-concurrent-booking.php:18 Stack trace: #0 {main} thrown in /var/www/html1/wp-content/plugins/salon-booking-system/test-concurrent-booking.php on line 18