update debugging info

app.py

@@ -155,20 +155,22 @@ def retry_last_answer(
     print(f"max_length is - {max_length}") 
     print(f"top_p is - {top_p}") 
     print(f"temperature is - {temperature}") 
-    print(f"past_key_values is - {past_key_values}") 
+    print(f"past_key_values type is - {type(past_key_values)}") 
           
     if chatbot and history:
         # Removing the previous conversation from chat 
         chatbot.pop(-1)
         # Removing bot response from the history 
-        history.pop(-1)
+        #history.pop(-1)
+        history[-1] = (history[-1][0],)
         # Setting up a flag to capture a retry 
         RETRY_FLAG = True
         # Getting last message from user
-        user_input = history[-1]
+        user_input = history[-1][0]
 
         print(f"popped chatbot is - {chatbot}") 
         print(f"popped history is - {history}") 
+        print(f"user_input is - {user_input}") 
 
     yield from predict(
         RETRY_FLAG,