Update app.py

app.py

@@ -406,7 +406,7 @@ class App:
     @staticmethod
     def download_files(file_paths):
         valid_files = [file for file in file_paths if os.path.exists(file)]
-        return valid_files
+        return valid_files[0]
 
 # Create the parser for command-line arguments
 parser = argparse.ArgumentParser()