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 ('4668d46c9dd72780b640d9f0b6f9b224', -1, 1714787660, 1714787660, '12dd2aa4', -11, 0, 0)

Line : 187
File : sessions.php