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 ('bd97e3805dfdccd7c674970c06c6d963', -1, 1713970240, 1713970240, '12db16a9', -1, 0, 0)

Line : 187
File : sessions.php