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 ('6b860462932f9f7d7e343b133d21f022', -1, 1713498316, 1713498316, '12761ff7', 5, 0, 0)

Line : 187
File : sessions.php