Update app.py

app.py

@@ -275,7 +275,8 @@ class RetroArtConverter:
         width = (width // 8) * 8
         height = (height // 8) * 8
         
-        return width, height
+        # Convert to Python int to avoid numpy int64 issues
+        return int(width), int(height)
     
     def add_trigger_word(self, prompt):
         """Add trigger word to prompt if not present"""
@@ -302,6 +303,8 @@ class RetroArtConverter:
         
         # Calculate optimal size
         original_width, original_height = input_image.size
+        original_width = int(original_width)
+        original_height = int(original_height)
         target_width, target_height = self.calculate_optimal_size(original_width, original_height)
         
         print(f"Resizing from {original_width}x{original_height} to {target_width}x{target_height}")