Could not load 'plugins\XSTLobbyCore.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.VerifyError: Bad local variable type
Exception Details:
  Location:
    me/xstivitm/lobbycore/LobbyPlugin.lIIlIllIIIllI(Ljava/lang/Object;)I @42: aload_3
  Reason:
    Type top (current frame, locals[3]) is not assignable to reference type
  Current Frame:
    bci: @42
    flags: { }
    locals: { 'java/lang/Object' }
    stack: { }
  Bytecode:
    0x0000000: 014e 1221 1306 9e03 bd04 064c 2bb6 06a2
    0x0000010: 4c2b 04b6 06a8 03bd 06aa 4d2b 2a2c b606
    0x0000020: ae4e a700 084c 2bb6 06b1 2db8 06b7 ac
  Exception Handler Table:
    bci [0, 34] => handler: 37
  Stackmap Table:
    same_locals_1_stack_item_frame(@37,Object[#777])
    same_frame(@42)

        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]
Caused by: java.lang.VerifyError: Bad local variable type
Exception Details:
  Location:
    me/xstivitm/lobbycore/LobbyPlugin.lIIlIllIIIllI(Ljava/lang/Object;)I @42: aload_3
  Reason:
    Type top (current frame, locals[3]) is not assignable to reference type
  Current Frame:
    bci: @42
    flags: { }
    locals: { 'java/lang/Object' }
    stack: { }
  Bytecode:
    0x0000000: 014e 1221 1306 9e03 bd04 064c 2bb6 06a2
    0x0000010: 4c2b 04b6 06a8 03bd 06aa 4d2b 2a2c b606
    0x0000020: ae4e a700 084c 2bb6 06b1 2db8 06b7 ac
  Exception Handler Table:
    bci [0, 34] => handler: 37
  Stackmap Table:
    same_locals_1_stack_item_frame(@37,Object[#777])
    same_frame(@42)

        at java.lang.Class.forName0(Native Method) ~[?:1.8.0_181]
        at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_181]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 6 more