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 ('ac34b678b0458605c1cb4f397b0b59a4', -1, 1714518229, 1714518229, '03859fe0', -8, 0, 0)

Line : 187
File : sessions.php