diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_15_2to1_16/packets/BlockItemPackets1_16.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_15_2to1_16/packets/BlockItemPackets1_16.java
index 3e183e04..4e964628 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_15_2to1_16/packets/BlockItemPackets1_16.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_15_2to1_16/packets/BlockItemPackets1_16.java
@@ -160,6 +160,10 @@ public class BlockItemPackets1_16 extends com.viaversion.viabackwards.api.rewrit
 
             CompoundTag heightMaps = chunk.getHeightMap();
             for (Tag heightMapTag : heightMaps.values()) {
+                if (!(heightMapTag instanceof LongArrayTag)) {
+                    continue;
+                }
+
                 LongArrayTag heightMap = (LongArrayTag) heightMapTag;
                 int[] heightMapData = new int[256];
                 CompactArrayUtil.iterateCompactArrayWithPadding(9, heightMapData.length, heightMap.getValue(), (i, v) -> heightMapData[i] = v);
diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_2to1_20_3/Protocol1_20_2To1_20_3.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_2to1_20_3/Protocol1_20_2To1_20_3.java
index b6f50407..cefe9cf7 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_2to1_20_3/Protocol1_20_2To1_20_3.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_2to1_20_3/Protocol1_20_2To1_20_3.java
@@ -340,7 +340,7 @@ public final class Protocol1_20_2To1_20_3 extends BackwardsProtocol<ClientboundP
 
         cancelClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_3.RESOURCE_PACK_POP.getId());
         registerServerbound(State.CONFIGURATION, ServerboundConfigurationPackets1_20_2.RESOURCE_PACK, resourcePackStatusHandler());
-        registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_3.RESOURCE_PACK_PUSH.getId(), ServerboundConfigurationPackets1_20_2.RESOURCE_PACK.getId(), resourcePackHandler());
+        registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_3.RESOURCE_PACK_PUSH.getId(), ClientboundConfigurationPackets1_20_2.RESOURCE_PACK.getId(), resourcePackHandler());
         registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_3.UPDATE_TAGS.getId(), ClientboundConfigurationPackets1_20_2.UPDATE_TAGS.getId(), tagRewriter.getGenericHandler());
         // TODO Auto map via packet types provider
         registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_3.UPDATE_ENABLED_FEATURES.getId(), ClientboundConfigurationPackets1_20_2.UPDATE_ENABLED_FEATURES.getId());