So I [fresh] installed Ubuntu 20.04 on an LXC container via Proxmox VE and upgraded 159 packages.
I am installing
cloudflared via Package Repository by following this documentation.
[Please see screenshot below]
After I followed the documentation, I typed
apt update to update the apt cache. After that, it threw an error.
W: GPG error: https://pkg.cloudflare.com focal Release: The following signatures were invalid: BADSIG 254B391D8CACCBF8 CloudFlare Software Packaging <[email protected]> E: The repository 'https://pkg.cloudflare.com focal Release' is not signed. N: Updating from such a repository can't be done securely and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
It was my first time experiencing the issue. Are there any workarounds to solve this issue?