diff --git a/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Documents/DocumentEto.cs b/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Documents/DocumentEto.cs
index 342ad59bcb..12f62f8b6d 100644
--- a/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Documents/DocumentEto.cs
+++ b/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Documents/DocumentEto.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 
 namespace Volo.Docs.Documents
 {
+    [Serializable]
     public class DocumentEto
     {
         public Guid Id { get; set; }
diff --git a/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Projects/ProjectEto.cs b/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Projects/ProjectEto.cs
index 110e497b43..dae1affae4 100644
--- a/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Projects/ProjectEto.cs
+++ b/modules/docs/src/Volo.Docs.Domain.Shared/Volo/Docs/Projects/ProjectEto.cs
@@ -2,6 +2,7 @@
 
 namespace Volo.Docs.Projects
 {
+    [Serializable]
     public class ProjectEto
     {
         public Guid Id { get; set; }
diff --git a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/DocsDomainModule.cs b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/DocsDomainModule.cs
index f392ca8875..5e53b858ce 100644
--- a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/DocsDomainModule.cs
+++ b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/DocsDomainModule.cs
@@ -20,24 +20,26 @@ namespace Volo.Docs
 {
     [DependsOn(
         typeof(DocsDomainSharedModule),
-        typeof(AbpDddDomainModule)
+        typeof(AbpDddDomainModule),
+        typeof(AbpAutoMapperModule)
         )]
     public class DocsDomainModule : AbpModule
     {
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            Configure<AbpDistributedEventBusOptions>(options =>
-            {
-                options.EtoMappings.Add<Document, DocumentEto>();
-                options.EtoMappings.Add<Project, ProjectEto>();
-            });
-
+            context.Services.AddAutoMapperObjectMapper<DocsDomainModule>();
 
             Configure<AbpAutoMapperOptions>(options =>
             {
                 options.AddProfile<DocsDomainMappingProfile>(validate: true);
             });
 
+            Configure<AbpDistributedEventBusOptions>(options =>
+            {
+                options.EtoMappings.Add<Document, DocumentEto>(typeof(DocsDomainModule));
+                options.EtoMappings.Add<Project, ProjectEto>(typeof(DocsDomainModule));
+            });
+            
             Configure<AbpVirtualFileSystemOptions>(options =>
             {
                 options.FileSets