phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_002sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f04dc875238b19f94da092c62d8a6f1d', -1, 1736578745, 1736578745, '12df2b97', -10, 0, 0)

Line : 216
File : sessions.php