fix

app.py

@@ -180,7 +180,13 @@ def display(x, y):
             original_df[column] = original_df[column].apply(remove_invalid_unicode)
 
     subset_df = original_df[COLS]
-    output_file_path = 'output/output.json'  # Adjust the path as needed
+    # Ensure the output directory exists
+    output_dir = 'output'
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+
+    # Save JSON to a file in the output directory
+    output_file_path = os.path.join(output_dir, 'output.json')
     with open(output_file_path, 'w') as file:
         file.write(subset_df.to_json(orient='records'))
     first_50_rows = subset_df.head(20)