You've posted this under the wrong mod, Aric's mod does not have bountysell. Ralph's version of Aric's mod has bountysell. https://itch.io/t/1036577/ralphs-modded-arics-mod-097-standalone-hybrid-expansio...
Also, double check that you have the latest version and that you didn't mix up the files between the 2 mods.