What do these 3 logs from Quantum Gateway router mean?

System: virtual void GreenWave::NlUtils::removeDefaultGateway(const string&, const GreenWave::IPv4&) const - ioctl failure - 3: No such process

Firewall.FirewallLog: Failed to execute script: iptables -t nat -F PC_PREROUTING iptables -t nat -F PC_GUEST_PREROUTING iptables -t nat -D GNW_OPEN_APPR_GUESTS_HOOK -j PC_GUEST_PREROUTING iptables -t nat -D PREROUTING_GNW -j PC_GUEST_PREROUTING

System: Failed to create directory /mnt/usbstick/jal: Read-only file system