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 ('db8dd9b15a3ced1f140a7d3f69a3f977', -1, 1730438868, 1730438868, '03176501', -1, 0, 0)

Line : 195
File : sessions.php