phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d6e49c1d7bb7bce43a857e13d4b2c5bc', -1, 1714517340, 1714517340, '038595a8', -1, 0, 0)

Line : 187
File : sessions.php