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 ('a362ab7007c908c0b359ea7dc5f1536b', -1, 1713575008, 1713575008, '0391088d', 3, 0, 0)

Line : 187
File : sessions.php