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 ('64e672e369022d09434a42610bc0f89d', -1, 1714517640, 1714517640, '12e0d6d7', -8, 0, 0)

Line : 187
File : sessions.php