java.lang.NoClassDefFoundError: Could not initialize class me.fusiondev.fusionpixelmon.api.ui.Shops$Options

[haroldrc]

when I do /pd it gives me this error:
java.lang.NoClassDefFoundError: Could not initialize class me.fusiondev.fusionpixelmon.api.ui.Shops$Options
at me.fusiondev.fusionpixelmon.api.ui.Shops.initShops(Shops.java:123) ~[?:?]
at me.fusiondev.fusionpixelmon.api.ui.Shops.launch(Shops.java:268) ~[?:?]
at me.fusiondev.fusionpixelmon.spigot.modules.pokedesigner.commands.PokeDesignerCommand.lambda$onCommand$0(PokeDesignerCommand.java:27) ~[?:?]
at me.fusiondev.fusionpixelmon.ui.PokeSelectorUI.lambda$new$0(PokeSelectorUI.java:57) ~[?:?]
at me.fusiondev.fusionpixelmon.spigot.impl.inventory.SpigotInvInventory.onInventoryClick(SpigotInvInventory.java:65) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor15.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:61) ~[EventExecutor.class:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:77) ~[TimedEventExecutor.class:?]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:66) ~[RegisteredListener.class:?]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) ~[SimplePluginManager.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147351_a(NetHandlerPlayServer.java:2120) ~[pa.class:?]
at net.minecraft.network.play.client.CPacketClickWindow.func_148833_a(CPacketClickWindow.java:38) ~[lf.class:?]
at net.minecraft.network.play.client.CPacketClickWindow.func_148833_a(CPacketClickWindow.java:12) ~[lf.class:?]
at net.minecraft.network.PacketThreadUtil.lambda$checkThreadAndEnqueue$0(PacketThreadUtil.java:16) ~[hv.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_292]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_292]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:840) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:461) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:778) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:624) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292]