Update app.py

app.py

@@ -35,6 +35,8 @@ def generate(input, slang, tlang):
                                   bos_token_id=bos_id, eos_token_id=eos_id, decoder_start_token_id=tokenizer._convert_token_to_id_with_added_voc("<2"+tlang+">"))
         decoded_output = tokenizer.decode(
         model_output[0], skip_special_tokens=True, clean_up_tokenization_spaces=False)
+    else:
+        decoded_output = input
     
 
     return decoded_output