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 ('5bc3dea2df15c2edcae29fb35b1e6167', -1, 1752616117, 1752616117, 'd849d8ff', 25, 0, 0)

Line : 190
File : sessions.php