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 ('981f66b1de5e40a07a3d85ae116485cd', -1, 1730424256, 1730424256, '03946d2d', -1, 0, 0)

Line : 195
File : sessions.php