diff --git a/modules/docs/app/VoloDocs.Web/VoloDocsWebModule.cs b/modules/docs/app/VoloDocs.Web/VoloDocsWebModule.cs
index 297a15c88d..5af8b1c129 100644
--- a/modules/docs/app/VoloDocs.Web/VoloDocsWebModule.cs
+++ b/modules/docs/app/VoloDocs.Web/VoloDocsWebModule.cs
@@ -177,8 +177,8 @@ namespace VoloDocs.Web
             
             Configure<DocsProjectPdfGeneratorOptions>(options =>
             {
-                options.BaseUrl = configuration["App:selfUrl"];
-                options.IndexPagePath = "Index.md";
+                options.BaseUrl = configuration["App:SelfUrl"];
+                options.IndexPagePath = "index.md";
                 options.CalculatePdfFileTitle = project => project.ShortName == "abp" ? "ABP Documentation" : null;
                 options.DocumentContentNormalizer = content => content.Replace("<i class=\"fa fa-minus text-secondary\"></i>", "No").Replace("<i class=\"fa fa-check text-success\"></i>", "Yes");
             });
diff --git a/modules/docs/app/VoloDocs.Web/appsettings.json b/modules/docs/app/VoloDocs.Web/appsettings.json
index 38400900f4..75d1b9890e 100644
--- a/modules/docs/app/VoloDocs.Web/appsettings.json
+++ b/modules/docs/app/VoloDocs.Web/appsettings.json
@@ -1,6 +1,6 @@
 {
   "App": {
-    "selfUrl": "https://localhost:5001"
+    "SelfUrl": "https://localhost:5001"
   },
   "Kestrel": {
     "EndPoints": {
diff --git a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Projects/Pdf/ProjectPdfGenerator.cs b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Projects/Pdf/ProjectPdfGenerator.cs
index de8be78ae1..c00973b3e8 100644
--- a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Projects/Pdf/ProjectPdfGenerator.cs
+++ b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/Projects/Pdf/ProjectPdfGenerator.cs
@@ -326,19 +326,21 @@ public class ProjectPdfGenerator : IProjectPdfGenerator, ITransientDependency
         version = string.IsNullOrWhiteSpace(version) ? project.LatestVersionBranchName : version;
         
         Document document = null;
-
         Exception firstException = null;
-        foreach (var name in GetPossibleNames(documentName, project.Format))
+        
+        var possibleNames = GetPossibleNames(documentName, project.Format);
+        document = await DocumentRepository.FindAsync(project.Id, possibleNames, languageCode, version);
+        if (document != null)
+        {
+            return document;
+        }
+        
+        foreach (var name in possibleNames)
         {
             try
             {
-                document = await DocumentRepository.FindAsync(project.Id, documentName, version, languageCode);
-                if (document != null)
-                {
-                    break;
-                }
-                
                 document = await DocumentSource.GetDocumentAsync(project, name, languageCode, version);
+                await DocumentRepository.InsertAsync(document, true);
                 break;
             }
             catch (Exception ex)
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
index 366f8d2a82..e6a6f8470a 100644
--- a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
@@ -294,7 +294,7 @@
                 @if (Model.HasDownloadPdfPermission)
                 {
                     <div class="docs-sidebar-footer">
-                        <a href="@Url.Content($"~/api/docs/documents/pdf?ProjectId={Model.Project.Id}&Version={(Model.LatestVersionInfo == null || Model.LatestVersionInfo.IsSelected ? DocsAppConsts.Latest : Model.Version)}&LanguageCode={Model.LanguageCode}")" target="_blank" class="download-pdf-btn">
+                        <a href="@Url.Content($"~/api/docs/documents/pdf?ProjectId={Model.Project.Id}&Version={(Model.LatestVersionInfo.IsSelected ? Model.LatestVersionInfo.Version : Model.Version)}&LanguageCode={Model.LanguageCode ?? Model.DefaultLanguageCode}")" target="_blank" class="download-pdf-btn">
                             <i class="fa fa-download"></i> @L["DownloadPDF"]
                         </a>
                     </div>