Update app.py

app.py

@@ -92,7 +92,7 @@ def detach_past_kv(past_kv):
 @spaces.GPU
 def set_past_key_values():
     model, tokenizer = pipe.model, pipe.tokenizer
-    tokenized = tokenizer(
+    tokenized = tokenizer.encode(
         system_only_prompt_format.format(system_message=system_prompt),
         return_tensors='pt'
     )