Gateway seems offline but gateway bridge log show its id

In chirpstack i have in the gateway bridge a trace if integration/mqtt with the id of a gateway but i not see the gateway in chirpstack network server:

أفريل 18 17:04:47 ubuntu-virtual-machine chirpstack-gateway-bridge[3107]: time=“2024-04-18T17:04:47.514030909+01:00” level=info msg=“integration/mqtt: publishing event” event=stats qos=0 topic=gateway/2159afad9e5f7be3/event/stats
أفريل 18 17:04:47 ubuntu-virtual-machine chirpstack-gateway-bridge[3107]: time=“2024-04-18T17:04:47.514510579+01:00” level=info msg=“integration/mqtt: publishing event” event=up qos=0 topic=gateway/c75717b68d3b2465/event/up uplink_id=38721
أفريل 18 17:04:47 ubuntu-virtual-machine chirpstack-gateway-bridge[3107]: time=“2024-04-18T17:04:47.514527408+01:00” level=info msg=“integration/mqtt: publishing event” event=stats qos=0 topic=gateway/c75717b68d3b2465/event/stats