diff --git a/app/controllers/admins/project_categories_controller.rb b/app/controllers/admins/project_categories_controller.rb
index 3b5065a16..8b1dd1f77 100644
--- a/app/controllers/admins/project_categories_controller.rb
+++ b/app/controllers/admins/project_categories_controller.rb
@@ -5,7 +5,7 @@ class Admins::ProjectCategoriesController < Admins::BaseController
   def index 
     sort_by = ProjectCategory.column_names.include?(params[:sort_by]) ? params[:sort_by] : 'created_at'
     sort_direction = %w(desc asc).include?(params[:sort_direction]) ? params[:sort_direction] : 'desc'
-    q = ProjectCategory.includes(:projects).ransack(name_cont: params[:name])
+    q = ProjectCategory.ransack(name_cont: params[:name])
     project_categories = q.result(distinct: true).order("#{sort_by} #{sort_direction}")
     @project_categories = paginate(project_categories)
     
diff --git a/app/views/admins/project_categories/_list.html.erb b/app/views/admins/project_categories/_list.html.erb
index 1a460a486..1a1626bc4 100644
--- a/app/views/admins/project_categories/_list.html.erb
+++ b/app/views/admins/project_categories/_list.html.erb
@@ -20,7 +20,7 @@
         </td>
         <td><%= project_category.pinned_index == 0 ? "" : "√" %></td>
         <td><%= project_category.projects_count %></td>
-        <td><%= project_category.projects.where(is_pinned: true).size %></td>
+        <td><%= project_category.projects.select(:id).where(is_pinned: true).size %></td>
         <td><%= project_category.created_at&.strftime('%Y-%m-%d %H:%M') %></td>
         <td class="action-container">
         <%= link_to "编辑", edit_admins_project_category_path(project_category), remote: true, class: "action" %>
diff --git a/app/views/user_rank/_detail.json.jbuilder b/app/views/user_rank/_detail.json.jbuilder
index 54afea5c4..11eda3fc7 100644
--- a/app/views/user_rank/_detail.json.jbuilder
+++ b/app/views/user_rank/_detail.json.jbuilder
@@ -1,15 +1,19 @@
 owner_common = $redis_cache.hgetall("v2-owner-common:#{item[0]}")
 popular_project = $redis_cache.zrevrange("v2-user-project-rank:#{item[0]}", 0, 1, withscores: true)[0]
-popular_project_common = $redis_cache.hgetall("v2-project-common:#{popular_project[0]}")
 json.id item[0]
 json.score item[1]
 json.name owner_common["name"]
 json.type owner_common["type"]
 json.login owner_common["login"]
 json.avatar_url owner_common["avatar_url"]
-json.project do 
-  json.id popular_project[0]
-  json.name popular_project_common["name"]
-  json.identifier popular_project_common["identifier"]
-  json.description popular_project_common["description"]
+if popular_project.blank?
+  json.project nil
+else
+  popular_project_common = $redis_cache.hgetall("v2-project-common:#{popular_project[0]}")
+  json.project do 
+    json.id popular_project[0]
+    json.name popular_project_common["name"]
+    json.identifier popular_project_common["identifier"]
+    json.description popular_project_common["description"]
+  end
 end
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