Our TAC installation failed when we gave private repo associated with an account.
Installation script was trying to resolve to
where as private repo URL for github tied to an account is
We did workaround where we defined the repo as public and let the installation continue and switched the URL back to private repo as part of TAC server settings.
Could you please indicate which talend build version you are using? Have you already create a case on talend support portal with your subscription solution?