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.

[stevef]

It may be that your attempt to update coincided with a new release of the tvheadend software.

I'd suggest trying again to see if you get the same problem. Post back with the result.

[Kamstrap]

Thanks for looking at this, I have tried the update numerous times over the past week and again today, still with the same result?? This was the first time in the past 3 months that I have had an opportunity to access my LL OS.

[stevef]

The NOSPLIT problem is hard to pin down.  In your report it seems to be limited to just the tvheadend software which tends to rule out some of the reported causes and fixes and tends to suggest a problem with the remote end.

Did the start of your update problem coincide with any significant system changes ?
Was tvheadend installed on the system and working well for a significant time before the update problem started ?
Can you describe how your system connects to the internet ?
For example is it a virtual machine, or behind a firewall/proxy set up ?

Please post the log of the most recent failed update.