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 ('4c1bdf4f4922a65c4451d512a0b8e931', -1, 1714404846, 1714404846, '12de7885', 5, 0)

Line : 158
File : sessions.php