phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2122de0a2c9dad8ed60f051d5240d4e8', -1, 1715316345, 1715316345, '030c6cec', 8, 0, 0)

Line : 189
File : sessions.php