phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO blitz_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('14d7a8264eeda1ad2087d7038a185b20', -1, 1713990616, 1713990616, '0aa8c802', 18, 0, 0)

Line : 200
File : sessions.php