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 ('1d90f8f20f420685dc7648b41ad11d83', -1, 1759709661, 1759709661, 'd849d88f', 16, 0, 0)

Line : 283
File : sessions.php