[02:18:20 WARN]: java.lang.NoClassDefFoundError: su/nightexpress/quantumrpg/modules/customitems/events/QuantumPlayerCustomItemUseEvent
[02:18:20 WARN]:        at com.guillaumevdn.questcreator.integration.quantumrpg.QuantumRPGIntegration.enable(QuantumRPGIntegration.java:44)
[02:18:20 WARN]:        at com.guillaumevdn.gcore.lib.GPlugin.enableIntegrationNoCatch(GPlugin.java:253)
[02:18:20 WARN]:        at com.guillaumevdn.gcore.lib.GPlugin.registerPluginIntegration(GPlugin.java:228)
[02:18:20 WARN]:        at com.guillaumevdn.gcore.lib.GPlugin.registerPluginIntegration(GPlugin.java:196)
[02:18:20 WARN]:        at com.guillaumevdn.questcreator.QuestCreator.initializeIntegration(QuestCreator.java:338)
[02:18:20 WARN]:        at com.guillaumevdn.questcreator.QuestCreator.delayedActivation(QuestCreator.java:665)
[02:18:20 WARN]:        at com.guillaumevdn.questcreator.QuestCreator.enable(QuestCreator.java:627)
[02:18:20 WARN]:        at com.guillaumevdn.gcore.lib.GPlugin.onEnable(GPlugin.java:324)
[02:18:20 WARN]:        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265)
[02:18:20 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:347)
[02:18:20 WARN]:        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:410)
[02:18:20 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:436)
[02:18:20 WARN]:        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:350)
[02:18:20 WARN]:        at net.minecraft.server.v1_13_R2.MinecraftServer.l(MinecraftServer.java:580)
[02:18:20 WARN]:        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:542)
[02:18:20 WARN]:        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:420)
[02:18:20 WARN]:        at net.minecraft.server.v1_13_R2.DedicatedServer.init(DedicatedServer.java:294)
[02:18:20 WARN]:        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:698)
[02:18:20 WARN]:        at java.lang.Thread.run(Unknown Source)
[02:18:20 WARN]: Caused by: java.lang.ClassNotFoundException: su.nightexpress.quantumrpg.modules.customitems.events.QuantumPlayerCustomItemUseEvent
[02:18:20 WARN]:        at java.net.URLClassLoader.findClass(Unknown Source)
[02:18:20 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:136)
[02:18:20 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:82)
[02:18:20 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[02:18:20 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[02:18:20 WARN]:        ... 19 more
[02:18:20 INFO]: [QuestCreator] WARNING: Couldn't integrate QuantumRPG, a new attempt will be made when it's enabled/reloaded
[02:18:20 INFO]: [QuestCreator] WARNING: If this causes quests to not load on plugin activation, try to enable the delayed activation in config.yml