Update app.py

app.py

@@ -98,6 +98,7 @@ def upload_file():
                     print('File uploaded successfully', 'success')
                 except Exception as e:
                     print(f"Error saving file: {str(e)}", 'error')
+                    flash(f"Error saving file: {str(e)}", 'error')
                     return render_template('upload.html')
 
                 # Handle non-JSON files