Setup.sh wants mono-dmcs when it is not availible

setup.sh keeps failing like this

`
Registering git hooks… (this will override existing ones!)
Attempting installation of missing package: mono-dmcs

  • sudo apt-get install -y mono-dmcs
    [sudo] password for [me]:
    Reading package lists… Done
    Building dependency tree
    Reading state information… Done
    Package mono-dmcs is not available, but is referred to by another package.
    This may mean that the package is missing, has been obsoleted, or
    is only available from another source
    However the following packages replace it:
    mono-mcs

E: Package ‘mono-dmcs’ has no installation candidate`

i have mono-mcs installed btw
sorry for bad formatting im not used to this