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 ('b67798df0b9b823bdc5d32943de6f394', -1, 1726880867, 1726880867, '12e32e45', -4, 0, 0)

Line : 189
File : sessions.php