Fix the code

SDXLImageGenerator.py

@@ -1,3 +1,7 @@
+import torch
+from diffusers import DiffusionPipeline
+import time
+from PIL import Image  # Import added for clarity
 from io import BytesIO
 
 class SDXLImageGenerator:
@@ -34,4 +38,4 @@ class SDXLImageGenerator:
 
         end_time = time.time()
         print("Total Time SDXL: %4f seconds" % (end_time - start_time))
-        return png_images
+        return png_images