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 ('debc6e8a45dc54b0c5c70d810e6b636a', -1, 1714681808, 1714681808, '031664b4', -10, 0)

Line : 158
File : sessions.php