In the beginning, I changed the state of the device when I sent LinkADRReq through gRPC successfully, but later all attempts failed.
Here is the Network-Server log:
Apr 27 16:42:39 emiya chirpstack-network-server[608]: time="2021-04-27T16:42:39+08:00" level=info msg="mac-command queue item created" cid=LinkADRReq ctx_id=ea25bc3a-a971-4845-b771-e4827ac47566 dev_eui=53232c5e6c936483
Apr 27 16:42:39 emiya chirpstack-network-server[608]: time="2021-04-27T16:42:39+08:00" level=info msg="finished unary call with code OK" ctx_id=ea25bc3a-a971-4845-b771-e4827ac47566 grpc.code=OK grpc.method=CreateMACCommandQueueItem grpc.service=ns.NetworkServerService grpc.start_time="2021-04-27T16:42:39+08:00" grpc.time_ms=0.469 peer.address="112.80.18.194:60865" span.kind=server system=grpc
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="gateway/mqtt: uplink frame received" gateway_id=0016c001ff10d3f7 uplink_id=ee7ec6b2-647d-4661-8e16-2ba971a119a8
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="uplink: frame(s) collected" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 mtype=UnconfirmedDataUp uplink_ids="[ee7ec6b2-647d-4661-8e16-2ba971a119a8]"
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="sent uplink meta-data to network-controller" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_eui=53232c5e6c936483
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="device gateway rx-info meta-data saved" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_eui=53232c5e6c936483
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="device-session saved" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_addr=26041304 dev_eui=53232c5e6c936483
Apr 27 16:43:41 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:41+08:00" level=info msg="finished client unary call" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 grpc.code=OK grpc.ctx_id=c834b531-4fe2-4bc9-b8b2-34efcfd2de89 grpc.duration=4.960012ms grpc.method=HandleUplinkData grpc.service=as.ApplicationServerService span.kind=client system=grpc
Apr 27 16:43:42 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:42+08:00" level=info msg="pending mac-command block set" cid=LinkADRReq commands=1 ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_eui=53232c5e6c936483
Apr 27 16:43:42 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:42+08:00" level=info msg="mac-command deleted from queue" cid=LinkADRReq ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_eui=53232c5e6c936483
Apr 27 16:43:42 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:42+08:00" level=info msg="pending mac-command block set" cid=LinkADRReq commands=1 ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 dev_eui=53232c5e6c936483
Apr 27 16:43:42 emiya chirpstack-network-server[608]: time="2021-04-27T16:43:42+08:00" level=error msg="uplink: processing uplink frame error" ctx_id=7599766f-1744-47a4-b3bc-b90414755ce6 error="run uplink response flow error: delete mac-command block from queue error: object does not exist"