phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e86621cc88c2eef6801b7e81f9cc8420', -1, 1713624566, 1713624566, '12e2fb44', 5, 0, 0)

Line : 187
File : sessions.php