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 ('9fb2b5ec3ff0e4b0ee988f9f349a4340', -1, 1748739140, 1748739140, '0395f77b', -9, 0, 0)

Line : 190
File : sessions.php