Update app.py

app.py

@@ -302,7 +302,7 @@ def chat_bert_context(question, history):
   return answer  
     
 #-------------------------------------Bi-BERT-Encoder------------------------------------------#
-
+MAX_LENGTH = 128
 # Define function for mean-pooling
 def mean_pool(token_embeds: torch.tensor, attention_mask: torch.tensor) -> torch.tensor:
     in_mask = attention_mask.unsqueeze(-1).expand(token_embeds.size()).float()