phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('603b6bc909fc06de9cbfd677a1b6e2c3', -1, 1749496743, 1749496743, 'd849d8a9', 2, 0, 0)

Line : 190
File : sessions.php