Update app.py

app.py

@@ -73,7 +73,7 @@ def generate(prompt, history,max_new_tokens,temperature=temperature,top_p=top_p,
         output += response.token.text
         if history:
             print (history)
-            yield "",history.append(prompt,output)
+            yield "",[(prompt,output)]
         else:
             yield "",[(prompt,output)]
 
@@ -92,7 +92,7 @@ def generate(prompt, history,max_new_tokens,temperature=temperature,top_p=top_p,
             print(line)            
     
     if history:
-        return "",[history,(prompt,output)]
+        return "",history.append([(prompt,output)])
     else:
         return "",[(prompt,output)]