Update app.py

app.py

@@ -270,11 +270,9 @@ if hasattr(pipeline, 'image_conditioner'):
         _ic_encoder = pipeline.image_conditioner.video_encoder()
         pipeline.image_conditioner.video_encoder = lambda: _ic_encoder
 
-# Create global references to prevent garbage collection
-# These ensure models stay loaded and ZeroGPU can pack them
-print("  Creating global references to prevent garbage collection...")
-global _stage_1_transformer, _stage_2_transformer, _text_encoder, _video_encoder
-global _video_decoder, _audio_decoder, _vocoder, _spatial_upsampler
+# Create references to prevent garbage collection
+# At module level, variables are already global - no 'global' keyword needed
+print("  Models captured and preserved for ZeroGPU tensor packing...")
 
 print("All models preloaded for ZeroGPU tensor packing!")
 print("=" * 80)