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 ('45f51a9a33649d2c2bde6c39c296d75e', -1, 1714832472, 1714832472, '03865a2c', 7, 0, 0)

Line : 187
File : sessions.php