Permission denied (publickey) Fatal: Could not read from remote repository

[StarrKiss]

Trying to install on Kubuntu, followed the guide:
git clone git@github.com:NoiSek/Aether.git

It gives me those errors.

[NoiSek]

If you haven't configured git locally, you'll have to use git clone https://github.com/NoiSek/Aether.git instead.

[StarrKiss]

That worked, but when I try to run

sudo sed -i 's/^(#?greeter)-session\s*=\s*(.*)/greeter-session = lightdm-webkit2-greeter #\1/ #\2g' /etc/lightdm/lightdm.conf

To get lightdm set up, it gives a no such file or directory error.

EDIT: Now it gives me this error:

sed: -e expression #1, char 81: invalid reference \1 on `s' command's RHS

[StarrKiss]

And when I boot back up into lightdm, it uses the default theme

[StarrKiss]

This error is also given:

sed: -e expression #1, char 81: invalid reference \1 on `s' command's RHS

[StarrKiss]

it alternates between errors

[NoiSek]

Duplicates #60