Ombutel to VitalPBX

I have a Ombutel pbx that has been running fine for many years but would like to update to VitalPBX, I have made a copy and tried to run the upgarde script at GitHub - VitalPBX/OmbutelMigration: Migration from Ombutel to VitalPBX.
the repo is failing at (http://repo.telesoftsa.com/sounds/rpms/x86_64/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found) can the script be fixed or can I make a change to allow it to work.