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 ('68fe45bb45d6d5bc94f22a7e7378a612', -1, 1714008156, 1714008156, '03901c32', 2, 0, 0)

Line : 187
File : sessions.php