diff --git a/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentTemplateDto.cs b/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentTemplateDto.cs
index 37d94b9032..75883375cb 100644
--- a/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentTemplateDto.cs
+++ b/modules/docs/src/Volo.Docs.Application.Contracts/Volo/Docs/Documents/DocumentTemplateDto.cs
@@ -8,8 +8,6 @@ namespace Volo.Docs.Documents
 
         public string Path { get; set; }
 
-        public List<string> SelfParameters { get; set; }
-
-        public List<string> ParentParameters { get; set; }
+        public List<string> Parameters { get; set; }
     }
 }
\ No newline at end of file
diff --git a/modules/docs/src/Volo.Docs.Web/HtmlConverting/ScribanDocumentSectionRenderer.cs b/modules/docs/src/Volo.Docs.Web/HtmlConverting/ScribanDocumentSectionRenderer.cs
index fedf8406f3..344a61e538 100644
--- a/modules/docs/src/Volo.Docs.Web/HtmlConverting/ScribanDocumentSectionRenderer.cs
+++ b/modules/docs/src/Volo.Docs.Web/HtmlConverting/ScribanDocumentSectionRenderer.cs
@@ -134,22 +134,21 @@ namespace Volo.Docs.HtmlConverting
                 var afterJsonOpener = documentContent.Substring(
                     documentContent.IndexOf(jsonOpener, StringComparison.Ordinal) + jsonOpener.Length);
 
-                var json = afterJsonOpener.Substring(0,
+                var betweenJsonOpenerAndCloser = afterJsonOpener.Substring(0,
                     afterJsonOpener.IndexOf(jsonCloser, StringComparison.Ordinal));
 
                 documentContent = afterJsonOpener.Substring(
                     afterJsonOpener.IndexOf(jsonCloser, StringComparison.Ordinal) + jsonCloser.Length);
 
-                if (!json.Contains(docs_templates))
+                if (!betweenJsonOpenerAndCloser.Contains(docs_templates))
                 {
                     continue;
                 }
 
-                json = json.Substring(json.IndexOf(docs_templates, StringComparison.Ordinal) + docs_templates.Length);
+                var json = betweenJsonOpenerAndCloser.Substring(betweenJsonOpenerAndCloser.IndexOf(docs_templates, StringComparison.Ordinal) + docs_templates.Length);
 
                 var template = JsonConvert.DeserializeObject<PartialTemplateDto>(json);
 
-
                 templates.Add(template);
             }
 
@@ -168,18 +167,18 @@ namespace Volo.Docs.HtmlConverting
                 var afterJsonOpener = document.Substring(
                     document.IndexOf(jsonOpener, StringComparison.Ordinal) + jsonOpener.Length);
 
-                var json = afterJsonOpener.Substring(0,
+                var betweenJsonOpenerAndCloser = afterJsonOpener.Substring(0,
                     afterJsonOpener.IndexOf(jsonCloser, StringComparison.Ordinal));
 
-                if (!json.Contains(docs_templates))
+                if (!betweenJsonOpenerAndCloser.Contains(docs_templates))
                 {
                     document = afterJsonOpener.Substring(
                         afterJsonOpener.IndexOf(jsonCloser, StringComparison.Ordinal) + jsonCloser.Length);
-                    newDocument.Append(beforeJson + json + jsonCloser);
+                    newDocument.Append(beforeJson + betweenJsonOpenerAndCloser + jsonCloser);
                     continue;
                 }
 
-                json = json.Substring(json.IndexOf(docs_templates, StringComparison.Ordinal) + docs_templates.Length);
+                var json = betweenJsonOpenerAndCloser.Substring(betweenJsonOpenerAndCloser.IndexOf(docs_templates, StringComparison.Ordinal) + docs_templates.Length);
 
                 var templateName = JsonConvert.DeserializeObject<PartialTemplateDto>(json)?.Name;
 
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
index 2572e3bfeb..2c9162d7c5 100644
--- a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml.cs
@@ -7,6 +7,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Rendering;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using Volo.Abp;
 using Volo.Abp.AspNetCore.Mvc.Localization;
 using Volo.Abp.AspNetCore.Mvc.UI.RazorPages;
 using Volo.Abp.Domain.Entities;
@@ -60,7 +61,7 @@ namespace Volo.Docs.Pages.Documents.Project
 
         public DocumentParametersDto DocumentPreferences { get; set; }
 
-        public DocumentRenderParameters UserPreferences { get; set; }
+        public DocumentRenderParameters UserPreferences { get; set; } = new DocumentRenderParameters();
 
         private readonly IDocumentAppService _documentAppService;
         private readonly IDocumentToHtmlConverterFactory _documentToHtmlConverterFactory;
@@ -419,7 +420,6 @@ namespace Volo.Docs.Pages.Documents.Project
 
         private async Task<List<DocumentPartialTemplateContent>> GetDocumentPartialTemplatesAsync()
         {
-            var contents = new List<DocumentPartialTemplateContent>();
 
             var projectPartialTemplates = await _documentAppService.GetPartialTemplatesAsync(
                 new GetDocumentPartialTemplatesInput()
@@ -431,14 +431,14 @@ namespace Volo.Docs.Pages.Documents.Project
 
             if (!projectPartialTemplates?.Templates?.Any() ?? true)
             {
-                return new List<DocumentPartialTemplateContent>();
+                return null;
             }
 
             var partialTemplatesInDocument = await _documentSectionRenderer.GetPartialTemplatesInDocumentAsync(Document.Content);
 
-            if (!partialTemplatesInDocument?.Any() ?? true)
+            if (!partialTemplatesInDocument?.Any(t => t.Parameters != null) ?? true)
             {
-                return new List<DocumentPartialTemplateContent>();
+                return null;
             }
 
             foreach (var partialTemplates in partialTemplatesInDocument)
@@ -447,11 +447,13 @@ namespace Volo.Docs.Pages.Documents.Project
                 {
                     if (!UserPreferences.ContainsKey(parameter.Key))
                     {
-                       UserPreferences.Add(parameter.Key, parameter.Value);
+                        UserPreferences.Add(parameter.Key, parameter.Value);
                     }
                 }
             }
 
+            var contents = new List<DocumentPartialTemplateContent>();
+
             foreach (var partialTemplate in projectPartialTemplates.Templates)
             {
                 contents.Add(new DocumentPartialTemplateContent
@@ -472,10 +474,8 @@ namespace Volo.Docs.Pages.Documents.Project
 
         private void SetUserPreferences()
         {
-            UserPreferences = new DocumentRenderParameters
-            {
-                {"Document_Language_Code", LanguageCode}, {"Document_Version", Version}
-            };
+            UserPreferences.Add("Document_Language_Code", LanguageCode);
+            UserPreferences.Add("Document_Version", Version);
 
             var cookie = Request.Cookies["AbpDocsPreferences"];