Native CAM - How To Install?

Fresh Debian 10 (Buster) install.
LinuxCNC

linuxcnc gmoccapy.ini
LINUXCNC - 2.8.1
Machine configuration directory is '/home/zzz/linuxcnc/configs/sim.gmoccapy'
Machine configuration file is 'gmoccapy.ini'
Starting LinuxCNC...

Trying to install github.com/FernV/NativeCAM
Following instructions from : forum.linuxcnc.org/nativecam/32891-use-nativecam-as-a-deb-package-now#94274

Result is an error message and no ncam installed on my system.

@LinuxCNC:~$ curl -L packagecloud.io/FernV/NativeCAM/gpgkey | sudo apt-key add -
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 3941 100 3941 0 0 4788 0 --:--:-- --:--:-- --:--:-- 4788
OK
ton@LinuxCNC:~$ sudo apt update
Hit:1 security.debian.org/debian-security buster/updates InRelease
Hit:2 deb.debian.org/debian buster InRelease
Hit:3 deb.debian.org/debian buster-updates InRelease
Hit:4 www.linuxcnc.org buster InRelease
Ign:5 packagecloud.io/FernV/NativeCAM/debian buster InRelease
Err:6 packagecloud.io/FernV/NativeCAM/debian buster Release
404 Not Found [IP: 54.183.38.243 443]
Reading package lists... Done
E: The repository ' packagecloud.io/FernV/NativeCAM/debian buster Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure( manpage for repository creation and user configuration details.

What did I do wrong?

ikkuh wrote: What did I do wrong?

Nothing !
It is not there, the file that is, is not on that server:

Try following the instructions in this thread: forum.linuxcnc.org/nativecam/39068-nativ...ge-for-buster-please in the message from russtuff.

On step 8, if you are not prompted to reload, click the reload button in synaptics.