not working

[rept36]

i am entirely new to bukkit and was wondering if someone could help. the plugin is not working idk why but this is my log

2023-04-15 13:35:02 [SEVERE] Could not load 'plugins/autorank.jar' in folder 'plugins': Vault
org.bukkit.plugin.UnknownDependencyException: Vault
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:215)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:136)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:141)
at org.bukkit.craftbukkit.CraftServer.(CraftServer.java:117)
at net.minecraft.server.ServerConfigurationManager.(ServerConfigurationManager.java:52)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:141)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:388)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

please help

Thank you in advance
Peechy