Update app.py

app.py

@@ -17,7 +17,7 @@ os.environ["PYOPENGL_PLATFORM"] = "egl"
 
 hf_dataset = load_dataset("fabiencasenave/2D_ElastoPlastoDynamics", split="all_samples")
 sample0 = hf_dataset[0]["sample"]
-plaid_sample0 = Sample.model_validate(pickle.loads(sample_))
+plaid_sample0 = Sample.model_validate(pickle.loads(sample0))
 times_steps = list(plaid_sample0._meshes.keys()) 
 
 ids_train = hf_dataset.description["split"]["train"]