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 ('8ad68a1367d3312a539b23fee49e2f3c', -1, 1749392500, 1749392500, 'd849d860', 2, 0, 0)

Line : 190
File : sessions.php