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 ('215a3cc9b1ebd4f79a805d5f7eb4a906', -1, 1749447858, 1749447858, 'd849d874', 3, 0, 0)

Line : 190
File : sessions.php