From 9ee548b96749d6f7fc3e230187a2b2b7c3a739e9 Mon Sep 17 00:00:00 2001
From: kennytv <jahnke.nassim@gmail.com>
Date: Wed, 11 Aug 2021 15:11:56 +0200
Subject: [PATCH] Fix 1.17 clients writing empty books Fixes #2658

---
 .../protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
index 411eb06a6..07ef96fc0 100644
--- a/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
+++ b/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_17_1to1_17/Protocol1_17_1To1_17.java
@@ -102,6 +102,11 @@ public final class Protocol1_17_1To1_17 extends AbstractProtocol<ClientboundPack
                         pagesTag.add(new StringTag(page));
                     }
 
+                    // Legacy servers don't like an empty pages list
+                    if (pagesTag.size() == 0) {
+                        pagesTag.add(new StringTag(""));
+                    }
+
                     tag.put("pages", pagesTag);
 
                     if (wrapper.read(Type.BOOLEAN)) {