Updates Error Log

[vint]

This is my first time here on the forum and also a new Linux Lite user.  I am having the same problem updating software.  /var/log/lite-software.log comes up & I'm unable to update and it reads to copy and paste to Linux Lite forum.
===========================
Install Updates Error log
===========================
Install Updates could not fetch the package cache information lists.
Go to https://www.freecinema2022.gq/forums/ and paste the log below into a new or existing thread for assistance.

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

Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Hit:2 http://us.archive.ubuntu.com/ubuntu focal InRelease
Get:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Hit:4 http://archive.canonical.com/ubuntu focal InRelease
Hit:5 http://repo.linuxliteos.com/linuxlite emerald InRelease
Get:6 https://packages.microsoft.com/repos/edge stable InRelease [7,342 B]
Get:7 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Err:6 https://packages.microsoft.com/repos/edge stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF
Get:8 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [9,136 B]
Get:9 http://us.archive.ubuntu.com/ubuntu focal-backports/universe amd64 c-n-f Metadata [692 B]
Reading package lists...
W: GPG error: https://packages.microsoft.com/repos/edge stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF
E: The repository 'https://packages.microsoft.com/repos/edge stable InRelease' is not signed.

I've removed MS Edge software but the error still comes up please help me.

Vint