Thank you for your reports!
A nasty bug, which prevented you from sacrificing your minions was fixed, you can do it now again.
Just remember, not every minion fits for a sacrifice, they should be alive. E.g. living corpses or Madame Mandilip's dolls can not be sacrificed by design.
Please, report your bugs and concerns here: https://forms.gle/qpcneQh1D6ynbW9T8