diff --git a/modules/weko-workflow/weko_workflow/api.py b/modules/weko-workflow/weko_workflow/api.py
index 80c221a13f..efccdeb0c7 100644
--- a/modules/weko-workflow/weko_workflow/api.py
+++ b/modules/weko-workflow/weko_workflow/api.py
@@ -2503,7 +2503,7 @@ def get_activity_steps(self, activity_id):
         his = WorkActivityHistory()
         histories = his.get_activity_history_list(activity_id)
         if not histories:
-            abort(404)
+            return []
         history_dict = {}
         activity = WorkActivity()
         activity_detail = activity.\
diff --git a/modules/weko-workflow/weko_workflow/views.py b/modules/weko-workflow/weko_workflow/views.py
index 4a55ec9bbe..8d4135ee57 100644
--- a/modules/weko-workflow/weko_workflow/views.py
+++ b/modules/weko-workflow/weko_workflow/views.py
@@ -758,6 +758,9 @@ def render_guest_workflow(file_name=""):
     )
 
     form = FlaskForm(request.form)
+    if not guest_activity.get("steps",[]):
+        current_app.logger.error("can not get workflow_action_history:{}".format(activity_id))
+        abort(404)
 
     return render_template(
         'weko_workflow/activity_detail.html',
@@ -880,7 +883,9 @@ def display_activity(activity_id="0", community_id=None):
         current_app.logger.error("display_activity: can not get activity display info")
         return render_template("weko_theme/error.html",
                 error="can not get data required for rendering")
-
+    if not steps:
+        current_app.logger.error("can not get workflow_action_history:{}".format(activity_id))
+        abort(404)
     # display_activity of Identifier grant
     identifier_setting = None
     if action_endpoint == 'identifier_grant' and item: