Update app.py

app.py

@@ -53,6 +53,7 @@ def resize_for_condition_image(input_image: Image.Image, resolution: int, canvas
     if canvas_height is None:
         canvas_height = H
 
+    # Transparent canvas
     canvas = Image.new("RGBA", (canvas_width, canvas_height), (255, 255, 255, 0))
 
     # Determine the relative size of the QR code based on the canvas dimensions
@@ -68,9 +69,9 @@ def resize_for_condition_image(input_image: Image.Image, resolution: int, canvas
     qr_y = (canvas_height - H) // 2  # Center the QR code vertically
 
     # Use the alpha channel of the input_image as the mask
-    canvas.paste(input_image, (qr_x, qr_y), input_image.split()[3])  # Alpha channel as mask
-    return canvas
+    canvas.paste(input_image, (qr_x, qr_y), mask=input_image.split()[3])  # Alpha channel as mask
 
+    return canvas
 
 
 SAMPLER_MAP = {
@@ -118,7 +119,7 @@ def inference(
         )
         qr.add_data(qr_code_content)
         qr.make(fit=True)
-        
+
         qrcode_image = qr.make_image(fill_color="black", back_color=None).convert("RGBA")
         qrcode_image = resize_for_condition_image(qrcode_image, 768, width, height)
     else: