Update app.py

app.py

@@ -977,8 +977,9 @@ def create_interface():
         def show_tree(html_file):
             if html_file and os.path.exists(html_file):
                 try:
-                    # Use the same file-serving URL as the download link
-                    file_url = f"/file={html_file}"
+                    # Convert to relative path for Gradio file serving
+                    relative_path = os.path.relpath(html_file, os.getcwd())
+                    file_url = f"/file={relative_path}"
                     link_html = f'<a href="{file_url}" target="_blank">View ML Simplified Tree</a>'
                     return gr.update(value=link_html)
                 except Exception as e: