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 ('d1d60457d4a6cd0bb5b08a613ae2ea69', -1, 1730418319, 1730418319, '12dc372b', -1280, 0, 0)

Line : 195
File : sessions.php