Bug fix in image composite

utils/image_utils.py

@@ -491,8 +491,12 @@ def alpha_composite_with_control(base_image, image_with_alpha, alpha_percent=100
     """
     name = None
     directory = None
+    if image_with_alpha is None:
+        return base_image
     image_with_alpha, isdict = get_image_from_dict(image_with_alpha)
     alpha_multiplier = alpha_percent / 100.0
+    if base_image is None:
+        return image_with_alpha
     if isinstance(base_image, str):
         directory, _, name,_, new_ext = get_file_parts(base_image)
         base_image = open_image(base_image)