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 ('94361183a8a77fd19f8510b3bbba9e8f', -1, 1730419797, 1730419797, '0316b551', -1280, 0, 0)

Line : 195
File : sessions.php