Unable to add repository: gpg: no valid OpenPGP data found

[numanzahid]

Operating System/Distribution

Pop!_OS (based on Ubuntu) Architecture: amd64

Installer

Trying to add repository from GitHub Desktop Linux fork (https://apt.packages.shiftkey.dev/ubuntu/). Following instructions with wget + gpg.

What happened?

When running the command to add the GPG key:

wget -qO - https://apt.packages.shiftkey.dev/gpg.key | gpg --dearmor | sudo tee /usr/share/keyrings/shiftkey-packages.gpg > /dev/null

I get the error:

gpg: no valid OpenPGP data found.

Because of this, the repository cannot be added to sources, and apt update won’t work with it.