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 ('7fcd5e5bd87a4c97567df595ed42619d', -1, 1754910114, 1754910114, 'd849d876', 3, 0, 0)

Line : 189
File : sessions.php