diff --git a/Pixiview.Android/Properties/AndroidManifest.xml b/Pixiview.Android/Properties/AndroidManifest.xml
index 8ecc7bc..cc0447f 100644
--- a/Pixiview.Android/Properties/AndroidManifest.xml
+++ b/Pixiview.Android/Properties/AndroidManifest.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0.526" package="org.tsanie.pixiview" android:versionCode="21">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.0.531" package="org.tsanie.pixiview" android:versionCode="22">
 	<uses-sdk android:minSdkVersion="25" android:targetSdkVersion="28" />
 	<application android:label="Pixiview" android:icon="@mipmap/icon" android:roundIcon="@mipmap/icon_round"></application>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
diff --git a/Pixiview.iOS.OpenExtension/Info.plist b/Pixiview.iOS.OpenExtension/Info.plist
index 2543d17..847a00b 100644
--- a/Pixiview.iOS.OpenExtension/Info.plist
+++ b/Pixiview.iOS.OpenExtension/Info.plist
@@ -29,8 +29,8 @@
 		<string>com.apple.share-services</string>
 	</dict>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.526</string>
+	<string>1.0.531</string>
 	<key>CFBundleVersion</key>
-	<string>21</string>
+	<string>22</string>
 </dict>
 </plist>
diff --git a/Pixiview.iOS/Info.plist b/Pixiview.iOS/Info.plist
index 2cb606b..a00cd38 100644
--- a/Pixiview.iOS/Info.plist
+++ b/Pixiview.iOS/Info.plist
@@ -79,9 +79,9 @@
 		</dict>
 	</array>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.526</string>
+	<string>1.0.531</string>
 	<key>CFBundleVersion</key>
-	<string>21</string>
+	<string>22</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>China</string>
 </dict>
diff --git a/Pixiview/Illust/RecommendsPage.xaml.cs b/Pixiview/Illust/RecommendsPage.xaml.cs
index 06033aa..46f1fe5 100644
--- a/Pixiview/Illust/RecommendsPage.xaml.cs
+++ b/Pixiview/Illust/RecommendsPage.xaml.cs
@@ -205,7 +205,7 @@ namespace Pixiview.Illust
             {
                 return null;
             }
-            return data.body.page.recommend.Select(id =>
+            return data.body.page.recommend.ids.Select(id =>
                 data.body.thumbnails.illust.FirstOrDefault(l => l.illustId == id)?.ConvertToItem());
         }
 
diff --git a/Pixiview/Utils/HttpUtility.cs b/Pixiview/Utils/HttpUtility.cs
index 88a118e..73ee878 100644
--- a/Pixiview/Utils/HttpUtility.cs
+++ b/Pixiview/Utils/HttpUtility.cs
@@ -106,6 +106,10 @@ namespace Pixiview.Utils
                         return default;
                     }
 
+                    if (content == null)
+                    {
+                        content = string.Empty;
+                    }
                     bool rtn = false;
                     T result = default;
                     if (namehandler != null)
@@ -118,7 +122,8 @@ namespace Pixiview.Utils
                         }
                         catch (Exception ex)
                         {
-                            App.DebugError("load", $"failed to parse illust JSON object, content: {content}, error: {ex.Message}");
+                            var memo = content.Length < 20 ? content : content.Substring(0, 20) + "...";
+                            App.DebugError("load", $"failed to parse illust JSON object, content: {memo}, error: {ex.Message}");
                             error = content;
                             return default;
                         }
@@ -162,7 +167,8 @@ namespace Pixiview.Utils
             }
             catch (Exception ex)
             {
-                App.DebugError("load", $"failed to parse illust JSON object, content: {content}, error: {ex.Message}");
+                var memo = content.Length < 20 ? content : content.Substring(0, 20) + "...";
+                App.DebugError("load", $"failed to parse illust JSON object, content: {memo}, error: {ex.Message}");
                 error = content;
                 return default;
             }
diff --git a/Pixiview/Utils/IllustData.cs b/Pixiview/Utils/IllustData.cs
index da6a3f9..b63ea4e 100644
--- a/Pixiview/Utils/IllustData.cs
+++ b/Pixiview/Utils/IllustData.cs
@@ -104,13 +104,18 @@ namespace Pixiview.Utils
         public class Page
         {
             public int[] follow;
-            public string[] recommend;
+            public Recommends recommend;
             public RecommendByTag[] recommendByTags;
             public Ranking ranking;
             public RecommendUser[] recommendUser;
             public EditorRecommend[] editorRecommend;
             public string[] newPost;
 
+            public class Recommends
+            {
+                public string[] ids;
+            }
+
             public class RecommendByTag
             {
                 public string tag;