Operation Not permitted

I recently configure BGP over vyos.
Live traffic is around 6 Gig.
suddenly traffic goes down to 2 Gig around and when i use any command like traceroute or ping it is showing Operation not permitted even when i ping itself and packet drop start in whole network.
after reboot everything works fine.

it is happening every alternate day on random time

this are snaps

show conf com | match "firewall|nat"
sudo conntrack -C

Do you use any VPN?
And maybe

sysctl net.ipv4.ping_group_range="0 2147483647"

no we are not using any VPN.
firewall all-ping enable
i didnt understood this ```
sysctl net.ipv4.ping_group_range=“0 2147483647”