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 ('5da6734786e90267f29ca9a25a40db20', -1, 1726882109, 1726882109, '12e139a4', -7, 0, 0)

Line : 189
File : sessions.php