Warning: session_start(): open(/var/cpanel/php/sessions/ea-php72/sess_c1466f7afbdfee3667552138b60a2554, O_RDWR) failed: No space left on device (28) in /home/mp1/public_html/inc/inc.configuration.php on line 21

Warning: session_start(): Failed to read session data: files (path: /var/cpanel/php/sessions/ea-php72) in /home/mp1/public_html/inc/inc.configuration.php on line 21

xCRUDxCRUD can not create session, because the output is already sent into browser. Try to define xCRUD instance before the output start or use session_start() at the beginning of your script