修复：提示使用tip_exception

app/controllers/concerns/api/project_helper.rb

@@ -1,7 +1,7 @@
 module Api::ProjectHelper
   extend ActiveSupport::Concern
 
-  def load_project 
+  def load_project
     namespace = params[:owner]
     repo = params[:repo]
 
@@ -14,7 +14,7 @@ module Api::ProjectHelper
     else
 			logger.info "###########：project not found"
       @project = nil
-       render_not_found and return
+      tip_exception(404, '您访问的页面不存在或已被删除')
     end
     @project
   end