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 ('8bc1821b8a09f227f466a83c55a7a7ff', -1, 1714534618, 1714534618, '12daacf9', 14, 0)

Line : 158
File : sessions.php