Update meta to disable warnings

extract_images.py

@@ -50,13 +50,15 @@ def main():
 
     ddf = dd.read_parquet(args.parquet_file)
 
-    results = ddf.apply(save_image, axis=1, meta='str',
+    results = ddf.apply(save_image,
+                        axis=1,
+                        meta=(args.image_column, "str"),
                         image_column=args.image_column,
                         save_folder=args.save_folder,
                         format=args.format,
                         print_logs=args.print_logs)
-    results.compute()  
+    results.compute()
 
 
 if __name__ == "__main__":
-    main()
+    main()