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) VALUES ('78e6f6e5e1618917b1d952afa9e0d8b5', -1, 1714687743, 1714687743, '03916f7d', -4, 0)

Line : 158
File : sessions.php