• Shopkeepers version: Shopkeepers-2.21.0.jar

[17:42:42] [Server thread/ERROR]: Could not pass event PlayerInteractEntityEvent to Shopkeepers v2.21.0
java.lang.NullPointerException: Cannot read field "handle" because "stack" is null
at org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(CraftItemStack.java:97) ~[purpur-1.21.jar:1.21-2244-21ec259]
at org.bukkit.craftbukkit.inventory.CraftInventory.setItem(CraftInventory.java:100) ~[purpur-1.21.jar:1.21-2244-21ec259]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.editor.AbstractEditorHandler.setTradeColumn(AbstractEditorHandler.java:291) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.editor.AbstractEditorHandler.setupTradeColumns(AbstractEditorHandler.java:677) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.editor.AbstractEditorHandler.setupCurrentPage(AbstractEditorHandler.java:659) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.editor.AbstractEditorHandler.openWindow(AbstractEditorHandler.java:648) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.SKUIRegistry.requestUI(SKUIRegistry.java:180) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.SKUIRegistry.requestUI(SKUIRegistry.java:107) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.SKUIRegistry.requestUI(SKUIRegistry.java:99) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.ui.SKUIRegistry.requestUI(SKUIRegistry.java:68) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.shopkeeper.AbstractShopkeeper.openWindow(AbstractShopkeeper.java:1431) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.shopkeeper.AbstractShopkeeper.openEditorWindow(AbstractShopkeeper.java:1438) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.shopkeeper.AbstractShopkeeper.onPlayerInteraction(AbstractShopkeeper.java:1458) ~[Shopkeepers-2.21.0.jar:?]
at Shopkeepers-2.21.0.jar/com.nisovin.shopkeepers.shopobjects.living.LivingEntityShopListener.onEntityInteract(LivingEntityShopListener.java:206) ~[Shopkeepers-2.21.0.jar:?]
at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:40) ~[paper-mojangapi-1.21-R0.1-SNAPSHOT.jar:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:77) ~[paper-mojangapi-1.21-R0.1-SNAPSHOT.jar:1.21-2244-21ec259]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-mojangapi-1.21-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54) ~[purpur-1.21.jar:1.21-2244-21ec259]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:131) ~[purpur-1.21.jar:1.21-2244-21ec259]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:628) ~[paper-mojangapi-1.21-R0.1-SNAPSHOT.jar:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl$4.performInteraction(ServerGamePacketListenerImpl.java:2798) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.network.ServerGamePacketListenerImpl$4.onInteraction(ServerGamePacketListenerImpl.java:2848) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.network.protocol.game.ServerboundInteractPacket$InteractionAction.dispatch(ServerboundInteractPacket.java:138) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.network.protocol.game.ServerboundInteractPacket.dispatch(ServerboundInteractPacket.java:89) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.network.ServerGamePacketListenerImpl.handleInteract(ServerGamePacketListenerImpl.java:2787) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.network.protocol.game.ServerboundInteractPacket.handle(ServerboundInteractPacket.java:76) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.network.protocol.game.ServerboundInteractPacket.handle(ServerboundInteractPacket.java:14) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:36) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:151) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1513) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:201) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:125) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1491) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1484) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:135) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1443) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1450) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1295) ~[purpur-1.21.jar:1.21-2244-21ec259]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:332) ~[purpur-1.21.jar:1.21-2244-21ec259]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]

Duplicate of #887 and will be fixed in Shopkeepers v2.22.0.