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    Thrown to indicate that a method has been passed an illegal or inappropriate argument. Make sure your getter and setter methods have the same return/parameter types (that is, String for String, Integer for Integer).

Solutions on the web

via GitHub by Flo56958
, 1 year ago
Can not set net.minecraft.server.v1_8_R1.EnumParticle field net.minecraft.server.v1_8_R1.PacketPlayOutWorldParticles.a to java.lang.String
via GitHub by bertek41
, 1 year ago
Can not set net.minecraft.server.v1_8_R3.EnumParticle field net.minecraft.server.v1_8_R3.PacketPlayOutWorldParticles.a to java.lang.String
via Stack Overflow by user1731299
, 2 years ago
Can not set java.sql.Timestamp field com.solr.SearchRequestResponseObject.created to java.util.Date
via nitrado.net by Unknown author, 2 years ago
Can not set java.util.UUID field net.minecraft.server.v1_8_R1.PacketPlayOutNamedEntitySpawn.b to com.mojang.authlib.GameProfile
via typepad.com by Unknown author, 2 years ago
Can not set org.glassfish.common.example.HelloRemote field org.glassfish.web.example.ExampleServlet1.hello1 to com.sun.proxy.$Proxy300
via Tridion by Gulshan Thakur
, 1 year ago
Can not set org.dd4t.contentmodel.impl.KeywordField field com.web.cms.model.PackageBundle.bonusItem to org.dd4t.contentmodel.impl.KeywordImpl
java.lang.IllegalArgumentException: Can not set net.minecraft.server.v1_8_R1.EnumParticle field net.minecraft.server.v1_8_R1.PacketPlayOutWorldParticles.a to java.lang.String	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)	at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)	at java.lang.reflect.Field.set(Unknown Source)	at com.w00tmast3r.skquery.util.packet.particle.Particle.play(Particle.java:62)	at com.w00tmast3r.skquery.elements.effects.EffParticle.execute(EffParticle.java:38)	at ch.njol.skript.lang.Effect.run(Effect.java:50)	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:63)	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:91)	at ch.njol.skript.lang.Trigger.execute(Trigger.java:53)	at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:149)	at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:109)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486)	at com.w00tmast3r.skquery.elements.effects.EffInvoke.execute(EffInvoke.java:29)	at ch.njol.skript.lang.Effect.run(Effect.java:50)	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:63)	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:91)	at ch.njol.skript.effects.Delay$1.run(Delay.java:85)	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java:53)	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:349)	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:668)	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:284)	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:609)	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:517)	at java.lang.Thread.run(Unknown Source)