Warning: require_once(DB.php): Failed to open stream: No such file or directory in /home4/airlands/public_html/medical_helper/admin/add.php on line 4

Fatal error: Uncaught Error: Failed opening required 'DB.php' (include_path='.:/opt/cpanel/ea-php82/root/usr/share/pear') in /home4/airlands/public_html/medical_helper/admin/add.php:4 Stack trace: #0 {main} thrown in /home4/airlands/public_html/medical_helper/admin/add.php on line 4