Tried and I can confirm that also on this version I have the same error trying to install sentinel-nikola and minipot. Problem already presented on 4.0.1 and 4.0.2 in the branch hbs and hbk, for the others I have not tried. The error I reported on another thread Collaborative firewall on Turris OS 4.x.x. I don’t know if it works in the end, but I don’t think so.