diff --git a/core/src/main/java/net/momirealms/craftengine/core/font/AbstractFontManager.java b/core/src/main/java/net/momirealms/craftengine/core/font/AbstractFontManager.java
index 072010f25..35678b59d 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/font/AbstractFontManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/font/AbstractFontManager.java
@@ -492,6 +492,10 @@ public abstract class AbstractFontManager implements FontManager {
                         return;
                     }
                 }
+                if (codepoints.length == 0) {
+                    TranslationManager.instance().log("warning.config.image.lack_char", path.toString(), id.toString());
+                    return;
+                }
                 codepointGrid[i] = codepoints;
                 if (size == -1) size = codepoints.length;
                 if (size != codepoints.length) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/util/FriendlyByteBuf.java b/core/src/main/java/net/momirealms/craftengine/core/util/FriendlyByteBuf.java
index 81ceb9719..5219bb4b4 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/util/FriendlyByteBuf.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/util/FriendlyByteBuf.java
@@ -101,6 +101,29 @@ public class FriendlyByteBuf extends ByteBuf {
         idList.forEach(this::writeVarInt);
     }
 
+    public List<byte[]> readByteArrayList() {
+        int listSize = this.readVarInt();
+        List<byte[]> bytes = new ArrayList<>();
+        for (int i = 0; i < listSize; ++i) {
+            bytes.add(this.readByteArray());
+        }
+        return bytes;
+    }
+
+    public List<byte[]> readByteArrayList(int maxSize) {
+        int listSize = this.readVarInt();
+        List<byte[]> bytes = new ArrayList<>();
+        for (int i = 0; i < listSize; ++i) {
+            bytes.add(this.readByteArray(maxSize));
+        }
+        return bytes;
+    }
+
+    public void writeByteArrayList(List<byte[]> bytes) {
+        this.writeVarInt(bytes.size());
+        bytes.forEach(this::writeByteArray);
+    }
+
     public <K, V, M extends Map<K, V>> M readMap(IntFunction<M> mapFactory, FriendlyByteBuf.Reader<K> keyReader, FriendlyByteBuf.Reader<V> valueReader) {
         int mapSize = this.readVarInt();
         M map = mapFactory.apply(mapSize);