Update app.py

app.py

@@ -38,6 +38,9 @@ from longcat_video.context_parallel import context_parallel_util
 from transformers import AutoTokenizer, UMT5EncoderModel
 from diffusers.utils import export_to_video
 
+# Add the cloned repository to the Python path to allow imports
+sys.path.insert(0, os.path.abspath(REPO_PATH))
+
 # Download model weights from Hugging Face Hub if they don't exist
 if not os.path.exists(CHECKPOINT_DIR):
     print(f"Downloading model weights to '{CHECKPOINT_DIR}'...")