Command /tags is not working

[JeffyDutch]

When i'm using the command. I get an error in console.

For the MC version i'm using, you can see it in de error.

Console message here in code view:
[14:50:45 INFO]: JeffyDutch issued server command: /tags [14:50:45 ERROR]: Command exception: /tags org.bukkit.command.CommandException: Unhandled exception executing command 'tags' in plugin SupremeTags v2.1.16 at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[paper-api-1.21.11-R0.1-SNAPSHOT.jar:?] at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:83) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73) ~[brigadier-1.3.10.jar:?] at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:30) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:13) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.execution.UnboundEntryAction.lambda$bind$0(UnboundEntryAction.java:8) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.execution.CommandQueueEntry.execute(CommandQueueEntry.java:5) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.execution.ExecutionContext.runCommandQueue(ExecutionContext.java:104) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.Commands.executeCommandInContext(Commands.java:469) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.Commands.performCommand(Commands.java:374) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.commands.Commands.performCommand(Commands.java:362) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.network.ServerGamePacketListenerImpl.performUnsignedChatCommand(ServerGamePacketListenerImpl.java:2374) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$12(ServerGamePacketListenerImpl.java:2347) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:177) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1532) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:188) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:151) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1512) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1506) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.recordTaskExecutionTimeWhileWaiting(MinecraftServer.java:1232) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1348) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:388) ~[paper-1.21.11.jar:1.21.11-88-8556cb4] at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?] Caused by: java.lang.NoClassDefFoundError: dev/lone/itemsadder/api/FontImages/FontImageWrapper at SupremeTags-2.1.16.jar//net.noscape.project.supremetags.utils.Utils.globalPlaceholders(Utils.java:596) ~[?:?] at SupremeTags-2.1.16.jar//net.noscape.project.supremetags.guis.MainMenu.getMenuName(MainMenu.java:45) ~[?:?] at SupremeTags-2.1.16.jar//net.noscape.project.supremetags.handlers.menu.Menu.open(Menu.java:46) ~[?:?] at SupremeTags-2.1.16.jar//net.noscape.project.supremetags.commands.tags.TagsCommand.handleMainCommand(TagsCommand.java:228) ~[?:?] at SupremeTags-2.1.16.jar//net.noscape.project.supremetags.commands.tags.TagsCommand.onCommand(TagsCommand.java:51) ~[?:?] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[paper-api-1.21.11-R0.1-SNAPSHOT.jar:?] ... 24 more Caused by: java.lang.ClassNotFoundException: dev.lone.itemsadder.api.FontImages.FontImageWrapper ... 30 more