Update app.py

app.py

@@ -20,12 +20,13 @@ if not os.path.exists(DIFFSYNTH_PATH):
     )
 
 # Import core modules from PusaV1
-from PusaV1.diffsynth import WanVideoPusaPipeline, save_video
+from PusaV1.diffsynth import ModelManager, WanVideoPusaPipeline, save_video
 
 
-from PusaV1.diffsynth import ModelManager as BaseModelManager
 
-class PatchedModelManager(BaseModelManager):
+
+
+class PatchedModelManager(ModelManager):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)