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, session_admin) VALUES ('ad4c3c497d49ed440c0c51713a981b98', -1, 1713624330, 1713624330, '12daa810', -11, 0, 0)

Line : 187
File : sessions.php