Update app.py

app.py

@@ -99,7 +99,7 @@ except Exception as e:
 
 def _patch_attention_for_kv_cache():
     """Patch Attention.forward to accept pre-projected K/V."""
-    from ltx_core.model.transformer.attention import Attention
+    from ltx_core.model.transformer.attention import Attention, apply_rotary_emb
     
     _original_forward = Attention.forward