Update modeling_kphi3.py

modeling_kphi3.py

@@ -32,6 +32,7 @@ from torch import nn
 from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
 
 from transformers.activations import ACT2FN
+from transformers.generation import GenerationMixin
 from transformers.cache_utils import Cache, DynamicCache
 from transformers.modeling_attn_mask_utils import _prepare_4d_causal_attention_mask
 from transformers.modeling_outputs import (