404. That’s an error.
The requested URL /coop/trust/add?user=012729965756196521982&sig=__GPzGvtcjz60pZ5bpoD_6JIYdzyk= was not found on this server. That’s all we know.
/coop/trust/add?user=012729965756196521982&sig=__GPzGvtcjz60pZ5bpoD_6JIYdzyk=