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 ('e0790b3f90402758695dacf5a29b4e66', -1, 1754583468, 1754583468, 'd849d88b', 8, 0, 0)

Line : 189
File : sessions.php