I can not install packages

[BrainnerRoger]

When you try to install a package, the message appears::
"The process will require 27 MiB more space.
7 MiB to be downloaded.
pkg: https://pkg.pfsense.org/pfSense_v2_3_1_amd64-pfSense_v2_3_1/All/pfSense-pkg-squid-0.4.16_2.txz: Not Found
Failed"

Filesystem Size Used Avail Capacity Mounted on
/dev/ufsid/5b23eb30bbd96959 143G 618M 131G 0% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/md0 3.4M 88K 3.0M 3% /var/run
devfs 1.0K 1.0K 0B 100% /var/dhcpd/dev

[jimp]

Upgrade to pfSense 2.4.4.