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) VALUES ('8efb5084f80b665cb1817fa2cd37cf1f', -1, 1714392449, 1714392449, '12df861d', -10, 0)

Line : 158
File : sessions.php