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) VALUES ('03fe43b9e6fa21e1a2fb89e6f421e8f9', -1, 1714346800, 1714346800, '03864e6a', 17, 0)

Line : 158
File : sessions.php