fix

app.py

@@ -180,8 +180,9 @@ def display(x, y):
             original_df[column] = original_df[column].apply(remove_invalid_unicode)
 
     subset_df = original_df[COLS]
-
-    first_50_rows = subset_df.head(5)
+    with open('output.json', 'w') as file:
+        file.write(subset_df.to_json(orient='records'))
+    first_50_rows = subset_df.head(20)
     print(first_50_rows.to_string())
     json_data = first_50_rows.to_json(orient='records')
     print(json_data)  # Print JSON representation