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 ('b20d9cda3cc9b1a5e45e4da0d7676dbb', -1, 1730415319, 1730415319, '03934319', 19, 0, 0)

Line : 195
File : sessions.php