diff --git a/doc/extensions/last_updated.py b/doc/extensions/last_updated.py
index a459ced4c..c4373490d 100644
--- a/doc/extensions/last_updated.py
+++ b/doc/extensions/last_updated.py
@@ -65,13 +65,13 @@ def _not_git_repo(dir):
 def _get_last_updated_from_git(file_path, git_repo, doc_root):
 
     rel_path = os.path.relpath(file_path, doc_root)
+    time_format = "%Y-%m-%d"
 
     for git_repo_path in git_repo:
 
         new_path = os.path.join(git_repo_path, rel_path)
         if os.path.isfile(new_path):
             try:
-                    time_format = "%Y-%m-%d"
                     output=subprocess.check_output(
                         f'git --no-pager log -1 --date=format:"{time_format}" --pretty="format:%cd" {new_path}',
                         shell=True, cwd=git_repo_path)
@@ -80,8 +80,11 @@ def _get_last_updated_from_git(file_path, git_repo, doc_root):
                     # folder on the list
                     continue
             else:
+                try:
                     last_updated = datetime.strptime(output.decode('utf-8'), time_format).date()
                     return last_updated
+                except:
+                    continue
         else:
             continue