Install Updates could not fetch the package cache information lists - NOSPLIT

[Kamstrap]

===========================
Install Updates Error log
===========================
Install Updates could not fetch the package cache information lists.
Go to https://www.linuxliteos.com/forums/ and paste the log below into the Software - Support - Updates section for assistance.

============ Log ===========

Hit:2 http://us.archive.ubuntu.com/ubuntu jammy InRelease
Hit:3 http://repo.linuxliteos.com/linuxlite fluorite InRelease
Hit:4 https://repo.nordvpn.com//deb/nordvpn/debian stable InRelease
Hit:5 https://dl.google.com/linux/chrome/deb stable InRelease
Get:6 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease [119 kB]
Hit:7 http://repository.spotify.com stable InRelease
Get:8 http://security.ubuntu.com/ubuntu jammy-security InRelease [110 kB]
Hit:9 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease
Get:10 http://us.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages [547 kB]
Hit:11 http://archive.canonical.com/ubuntu jammy InRelease
Get:1 https://apt.tvheadend.org/stable bionic InRelease
Get:12 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [1,262 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1,018 kB]
Get:14 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe i386 Packages [675 kB]
Err:1 https://apt.tvheadend.org/stable bionic InRelease
  Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Reading package lists...
E: Failed to fetch https://apt.tvheadend.org/stable/dists/bionic/InRelease  Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
E: The repository 'https://apt.tvheadend.org/stable bionic InRelease' is no longer signed.