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 ('a5fe1bb2f36054a879187a7c27970b9d', -1, 1748756029, 1748756029, 'd849d8b6', 13, 0, 0)

Line : 187
File : sessions.php