QuickShop Reremake HELP NEEDED

So, I am currently using Minecraft version 1.16.1, and I'm trying to add this plugin to my Aternos server. I do not have the vault plugin or any economy plugin with it, and as a result I received an error, saying, ""Error: Economy system not loaded, type /qs main command to get details." How can I fix this so that the plugin can work, or what other plugins do I need to add so that it can work?

This plugin is bukkit/spigot.

Well I tried using Vault, but with vault it said that I needed an economy plugin. Do you which plugins will support QuickShop? How do I even check if a plugin will support it and make it work? With the QuickShop plugin by itself, I'm not able to do anything.