After upgrade some devices to release 24.4R2-S3, some telemetry sensors stopped working.
user@device:~# gnmic -a x.x.x.x:32767 --insecure -e json sub --mode once --format flat --path "/junos/system/linecard/firewall"
rpc error: code = InvalidArgument desc = Unsupported subscription path, /junos/system/linecard/firewall
Error: one or more requests failed
user@device:~#
The problem is due to a missing file in code 24.4 for QFX10k.
The issue will be resolved via software upgrade, the planned release is 24.4R2-S6. Problem is not seen in 23.4R2-S7.4.