Step #13 - "build and run ansible": TASK [edxapp : checkout comprehensive themes] **********************************
... "git@github.com:appsembler/edx-theme-codebase.git", "theme_version": "matej/juniper"}}, "msg": "Cloning into '/edx/var/edxapp/themes/edx-theme-codebase'...\nPermission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.", "rc": 128,
this should resolve the ssh checkout errors: