I can't run sk-perm

[SupersonicSpeedy]

Sk-perm won't work and it's red! 
It says in the logs:
 

[08:23:19] [Server thread/ERROR]: Error occurred while enabling Sk-Perm v2.3.0 (Is it up to date?)
java.lang.NoClassDefFoundError: me/lucko/luckperms/LuckPerms
	at tk.shanebee.skperm.utils.api.LuckAPI.<init>(LuckAPI.java:17) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_212]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_212]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_212]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_212]
	at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_212]
	at tk.shanebee.skperm.SkPerm.loadApi(SkPerm.java:88) ~[?:?]
	at tk.shanebee.skperm.SkPerm.onEnable(SkPerm.java:47) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot.jar:git-Paper-129]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:380) ~[spigot.jar:git-Paper-129]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:483) ~[spigot.jar:git-Paper-129]
	at org.bukkit.craftbukkit.v1_16_R1.CraftServer.enablePlugin(CraftServer.java:500) ~[spigot.jar:git-Paper-129]
	at org.bukkit.craftbukkit.v1_16_R1.CraftServer.enablePlugins(CraftServer.java:414) ~[spigot.jar:git-Paper-129]
	at net.minecraft.server.v1_16_R1.MinecraftServer.loadWorld(MinecraftServer.java:471) ~[spigot.jar:git-Paper-129]
	at net.minecraft.server.v1_16_R1.DedicatedServer.init(DedicatedServer.java:241) ~[spigot.jar:git-Paper-129]
	at net.minecraft.server.v1_16_R1.MinecraftServer.v(MinecraftServer.java:941) ~[spigot.jar:git-Paper-129]
	at net.minecraft.server.v1_16_R1.MinecraftServer.lambda$a$0(MinecraftServer.java:177) ~[spigot.jar:git-Paper-129]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
Caused by: java.lang.ClassNotFoundException: me.lucko.luckperms.LuckPerms
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_212]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:171) ~[spigot.jar:git-Paper-129]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[spigot.jar:git-Paper-129]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_212]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_212]
	... 18 more
[08:23:19] [Server thread/INFO]: [Sk-Perm] Disabling Sk-Perm v2.3.0

[notminehut]

It seems LuckPerms is required, try installing that.