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 ('7a66b8ca72d9f0d91d78ca79d95d1f24', -1, 1713257137, 1713257137, '127711cf', 5, 0, 0)

Line : 187
File : sessions.php