qMp (Quick Mesh Project) - Packages

Hi,

I´m trying update my router via opkg update but looks like usign package is missing.
Because of it is not possible to install any package via opkg.
How can I fix it?

The antenna is a nanobridge M5 with qMp 4.0 Macondo (branch 4.0 rev.029002d-20180102-2014)
LEDE Reboot 17.01.4 r3560-79f57e422d / LuCI lede-17.01 branch (git-17.336.23170-d2dc32a)

Downloading http://downloads.lede-project.org/releases/17.01.4/targets/ar71xx/generic/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_core
Downloading http://downloads.lede-project.org/releases/17.01.4/targets/ar71xx/generic/packages/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/base/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_base
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/base/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/luci/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_luci
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/luci/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_packages
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/packages/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/routing/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_routing
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/routing/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/telephony/Packages.gz
Updated list of available packages in /var/opkg-lists/reboot_telephony
Downloading http://downloads.lede-project.org/releases/17.01.4/packages/mips_24kc/telephony/Packages.sig
Signature check failed.
Remove wrong Signature file.

/usr/sbin/opkg-key: line 56: usign: not found
/usr/sbin/opkg-key: line 56: usign: not found
/usr/sbin/opkg-key: line 56: usign: not found
/usr/sbin/opkg-key: line 56: usign: not found
/usr/sbin/opkg-key: line 56: usign: not found
/usr/sbin/opkg-key: line 56: usign: not found