ERROR ver. 1.15.1

[onietoja]

Oh, Hi! I have a little problem. Server version is 1.15.1 :c Help, please :(

[17:41:58] [Server thread/ERROR]: Error occurred while enabling PreciousStones v15.0 (Is it up to date?)
java.lang.NoClassDefFoundError: br/net/fabiozumbi12/RedProtect/Bukkit/RedProtect
at net.sacredlabyrinth.Phaed.PreciousStones.managers.RedProtectManager.(RedProtectManager.java:25) ~[?:?]
at net.sacredlabyrinth.Phaed.PreciousStones.PreciousStones.onEnable(PreciousStones.java:151) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:352) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:417) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:462) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:376) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:456) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:266) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:783) [spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
Caused by: java.lang.ClassNotFoundException: br.net.fabiozumbi12.RedProtect.Bukkit.RedProtect
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_201]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:135) ~[spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:81) ~[spigot-1.15.1.jar:git-Spigot-492a779-9820cd2]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_201]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_201]
... 11 more

[onietoja]

what can i do?

[yannicklamprecht]

Add Redprotect plugin.