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 ('b0dcf4f39273fddaa68b9cf5d930f89f', -1, 1708788615, 1708788615, '03ef4c19', -11, 0, 0)

Line : 187
File : sessions.php