val_max_target_length set to OUTPUT_LENGTH

seq2seq/run_seq2seq_flax.py

@@ -166,7 +166,7 @@ class DataTrainingArguments:
         },
     )
     val_max_target_length: Optional[int] = field(
-        default=None,
+        default=OUTPUT_LENGTH,
         metadata={
             "help": "The maximum total sequence length for validation target text after tokenization. Sequences longer "
             "than this will be truncated, sequences shorter will be padded. Will default to `max_target_length`."