Can't get submodule for statues.

[faldor20]

for some reason i cannot seem to download the sub module for the statues, i try it in something like gitkraken and it just fails and says no refernce for shorthand origin/master and command line git says: git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Unable to fetch in submodule path 'Packages/jp.keijiro.beta'