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 ('807d1e0a14e798396d2c1393312b3b4e', -1, 1749380860, 1749380860, 'd849d860', 2, 0, 0)

Line : 190
File : sessions.php