Error objet does not exist

Hi

After update form loraserver to ChirpStack, i’m getting the message:

nov 11 15:58:57 rak-gateway chirpstack-network-server[462]: time=“2019-11-11T15:58:57-03:00” level=error msg=“uplink: handle downlink tx ack error” ctx_id=84bbd6ca-3897-45c6-95e7-e643ad1672aa error=“get downlink-frames error: object does not exist” gateway_id=b827ebfffebeb493 token=33979

The gateway exist and its configured on ChirpStack app server, but dont show any count of data (before update, the gateway was counting)

And, if you see, in live lorawan frames, you can see data