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 ('4ba049b9172b3bea291d39cf3677b1d2', -1, 1714197776, 1714197776, '0311b85a', 0, 0)

Line : 158
File : sessions.php