Could not make: Unknown error

I think I would just 'cd' to /home/myhome/.cpan/build/Package-Stash-XS-0.28-KGjONb, run 'make clean', followed by 'perl Makefile.PL', followed by 'make test' - and then 'make install' if all went well.
If all did *not* go well, then you should at least have meaningful error messages with which to work.

Once you get Package::Stash::XS installed, you can then re-run your original command in order to install the module you want.

Cheers,
Rob