Fix wrong import

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 import torch
-from transformers import DebertaV2Model, DebertaV2Config, AutoTokenizer, PreTrainedModel, ContextPooler
+from transformers import DebertaV2Model, DebertaV2Config, AutoTokenizer, PreTrainedModel
+from transformers.models.deberta.modeling_deberta import ContextPooler
 from transformers import pipeline
 import torch.nn as nn