[16:56:32] [Server thread/WARN]: [CS-CoreLib] Task #5 for CS-CoreLib v1.6.3 generated an exception
java.lang.NoClassDefFoundError: nl/rutgerkok/blocklocker/BlockLockerAPIv2
at me.mrCookieSlime.CSCoreLibPlugin.cscorelib2.protection.modules.BlockLockerProtectionModule.load(BlockLockerProtectionModule.java:21) ~[?:?]
at me.mrCookieSlime.CSCoreLibPlugin.cscorelib2.protection.ProtectionManager.registerModule(ProtectionManager.java:162) ~[?:?]
at me.mrCookieSlime.CSCoreLibPlugin.cscorelib2.protection.ProtectionManager.<init>(ProtectionManager.java:95) ~[?:?]
at me.mrCookieSlime.CSCoreLibPlugin.protection.ProtectionManager.<init>(ProtectionManager.java:19) ~[?:?]
at me.mrCookieSlime.CSCoreLibPlugin.CSCoreLib.lambda$0(CSCoreLib.java:115) ~[?:?]
at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:76) ~[minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:361) [minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:739) [minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
Caused by: java.lang.ClassNotFoundException: nl.rutgerkok.blocklocker.BlockLockerAPIv2
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_222]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:152) ~[minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[minecraft_server.jar:git-Spigot-2cf50f0-2b93d83]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_222]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_222]
... 12 more