Added 'pad_token_id'.

configuration_ouro.py

@@ -173,6 +173,7 @@ class OuroConfig(PretrainedConfig):
         early_exit_threshold=1.0,
         **kwargs,
     ):
+        self.pad_token_id = 2 # eom_token_id
         self.vocab_size = vocab_size
         self.max_position_embeddings = max_position_embeddings
         self.hidden_size = hidden_size