Dec 04 11:57:55 iZuf66jmg6i6w695ab1apuZ chirpstack-gateway-bridge[15255]: time=“2020-12-04T11:57:55+08:00” level=info msg=“integration/mqtt: publishing event” event=up qos=0 topic=gateway/70b3d5fffe88b7c8/event/up uplink_id=a54e9de7-c074-4556-94f5-9a7ce6bfe5a7
Dec 04 11:57:56 iZuf66jmg6i6w695ab1apuZ chirpstack-gateway-bridge[15255]: time=“2020-12-04T11:57:56+08:00” level=info msg=“integration/mqtt: downlink frame received” downlink_id=4527c09b-e89c-49f1-94f5-e33c8a1df0bd gateway_id=70b3d5fffe88b7c8
Dec 04 11:57:56 iZuf66jmg6i6w695ab1apuZ chirpstack-gateway-bridge[15255]: time=“2020-12-04T11:57:56+08:00” level=error msg=“backend/semtechudp: could not handle packet” addr=“218.106.117.210:41492” data_base64=AQAABXCz1f/+iLfI error=“no internal frame cache for token 0”
how fix this error