From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Video <videogamesm12@gmail.com>
Date: Sun, 13 Mar 2022 18:42:07 -0600
Subject: [PATCH] Fixes Knowledge Books causing log spam when invalid data is
 provided


diff --git a/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java b/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
index bb5319afd112f1013445e29e9fcad137d4c581f9..13f6cd57c3dc39cfd58b2a58aec8a1f08fad5d4a 100644
--- a/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
+++ b/src/main/java/net/minecraft/world/item/KnowledgeBookItem.java
@@ -55,7 +55,7 @@ public class KnowledgeBookItem extends Item {
 
             return InteractionResultHolder.sidedSuccess(itemStack, world.isClientSide());
         } else {
-            LOGGER.error("Tag not valid: {}", (Object)compoundTag);
+            // Scissors - Don't throw errors into the logs if an NBT compound isn't present or is missing the Recipes tag.
             return InteractionResultHolder.fail(itemStack);
         }
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
index e816e505cd292d6c5138dff0aeae0e9592c09de0..0f6438dfe0a6620eb87233b9eefbe2340dfc347b 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaKnowledgeBook.java
@@ -42,7 +42,12 @@ public class CraftMetaKnowledgeBook extends CraftMetaItem implements KnowledgeBo
             for (int i = 0; i < pages.size(); i++) {
                 String recipe = pages.getString(i);
 
-                this.addRecipe(CraftNamespacedKey.fromString(recipe));
+                // Scissors start - Don't add recipes with invalid namespaces
+                try {
+                    this.addRecipe(CraftNamespacedKey.fromString(recipe));
+                } catch (Exception ignored) {
+                }
+                // Scissors end
             }
         }
     }