can't download the installer from repository

[Pupo1]

Hello,
I did exactly as in the description, but the downloader will not download.
I tried this on linux 17 Quiana.
The following error occurs:

$:~/Kobo2/okreader# git submodule update
Klone nach 'src/koreader'...
Warning: Permanently added the RSA host key for IP address '192.30.253.113' to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

[Auxnon]

I also received same results on ubuntu, ubuntu windows subsytem, and raspbian

[lgeek]

Ah, you need to switch the git submodules to HTTPS access if you don't have your public SSH key set up on github (in .gitmodules). Or get the prebuilt images from here. There's no installer.

I got stuck on this step too. What I did to make it work...
change into the ".git" directory in the "okreader" directory. Then edit the "config" file. Change all sections that have "git@github.com:" to "https://github.com/" then try to cloning the sub-modules again. I had to work this out myself as I'm pretty new to using git and building stuff from source.