Hi friend.
The root cause is the packet filter applied in the interfaces.
Please remove the packet filter configuration with the following commands and add it to the link aggregation:
undo packet-filter inbound ip-group 3100 rule 1 port 0/20/1to-cpu
undo packet-filter inbound ip-group 3100 rule 1 port 0/19/1to-cpu
For more information about the command, please click:
packet-filter
Thanks.