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 ('3b4f62748c59048ba5c408b389a11a58', -1, 1713966153, 1713966153, '12d85e98', 4, 0, 0)

Line : 187
File : sessions.php