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 ('a4ad71ab0f88fdbb75a00e24c28c26fe', -1, 1715308990, 1715308990, '12daacf9', -7, 0, 0)

Line : 189
File : sessions.php