diff --git a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
index 02f935e2..bac0bd3c 100644
--- a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
+++ b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
@@ -161,11 +161,12 @@ public class ScannerManagerActivity extends AppCompatActivity {
         dialog.setCancelable(false);
         dialog.show();
         DocumentMeta documentMeta = new DocumentMeta("Untitled"); // TODO-rca: デフォルトタイトルを指定できるようにする
-        document.createDocument(documentMeta).thenAccept((documentDetail1) -> {
-            Bitmap[] bitmaps = new Bitmap[this.croppedImages.size()];
-            this.croppedImages.toArray(bitmaps);
-            addPagesToDocumentDetail(documentDetail1, bitmaps).join();
-            document.updateDocument(documentDetail1).join();
+        document.createDocument(documentMeta).thenAccept((documentDetail) -> {
+            Bitmap[] bitmaps = new Bitmap[croppedImages.size()];
+            croppedImages.toArray(bitmaps);
+            logger.debug(TAG, "bitmaps.length: " + bitmaps.length);
+            addPagesToDocumentDetail(documentDetail, bitmaps).join();
+            document.updateDocument(documentDetail).join();
             dialog.dismiss();
             finish();
         });
diff --git a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ComponentViewerTopFragment.java b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ComponentViewerTopFragment.java
index 509b2a34..89ba6954 100644
--- a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ComponentViewerTopFragment.java
+++ b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ComponentViewerTopFragment.java
@@ -21,6 +21,7 @@ import dagger.hilt.android.AndroidEntryPoint;
 import one.nem.lacerta.data.Document;
 import one.nem.lacerta.model.document.DocumentDetail;
 import one.nem.lacerta.model.document.page.Page;
+import one.nem.lacerta.utils.LacertaLogger;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -33,6 +34,9 @@ public class ComponentViewerTopFragment extends Fragment {
     @Inject
     Document document;
 
+    @Inject
+    LacertaLogger logger;
+
     private static final String TAG = "ComponentViewerTopFragment";
 
     private String documentId;
@@ -71,9 +75,11 @@ public class ComponentViewerTopFragment extends Fragment {
         recyclerView.setAdapter(viewerBodyAdapter);
 
         document.getDocument(documentId).thenAccept(documentDetail -> {
-            viewerBodyAdapter.setPages(documentDetail.getPages());
+            ArrayList<Page> pages = documentDetail.getPages();
+            logger.debug(TAG, "pages.size(): " + pages.size());
+            viewerBodyAdapter.setPages(pages);
             getActivity().runOnUiThread(() -> {
-                viewerBodyAdapter.notifyItemRangeChanged(0, documentDetail.getPages().size());
+                viewerBodyAdapter.notifyItemRangeChanged(0, pages.size());
             });
         });
 
diff --git a/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java b/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
index dca3b0e6..47f8e9a2 100644
--- a/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
+++ b/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
@@ -157,7 +157,13 @@ public class DocumentImpl implements Document {
         return CompletableFuture.supplyAsync(() -> {
             FileManager fileManager = fileManagerFactory.create(deviceInfoUtils.getExternalStorageDirectory());
             try {
-                return xmlMetaParser.deserialize(fileManager.resolve(documentId).loadXml("meta.xml")).getPages();
+                ArrayList<XmlMetaPageModel> xmlMetaPageModels = xmlMetaParser.deserialize(fileManager.resolve(documentId).loadXml("meta.xml")).getPages();
+                // Debug
+                logger.debug(TAG, "xmlMetaPageModels: " + xmlMetaPageModels.size());
+                for (XmlMetaPageModel xmlMetaPageModel : xmlMetaPageModels) {
+                    logger.debug(TAG, "\txmlMetaPageModel: " + xmlMetaPageModel.getFilename());
+                }
+                return xmlMetaPageModels;
             } catch (IOException e) {
                 logger.error(TAG, "DocumentMeta parse error");
                 logger.trace(TAG, e.getMessage());