# Trainer not logging eval\_loss
**URL:**
**Author:**  [@vasudevgupta](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fvasudevgupta)%5C
**Post date:** [April 26, 2021, 6:14am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ftrainer-not-logging-eval-loss%2F5760%2F1 "2021-04-26T06:14:39Z")
I am using 🤗Trainer from `master` branch with following args:
```python
args = TrainingArguments(
output_dir="nq-complete-training",
overwrite_output_dir=False,
do_train=True,
do_eval=True,
evaluation_strategy="steps",
eval_steps=5,
per_device_train_batch_size=4,
per_device_eval_batch_size=4,
gradient_accumulation_steps=1,
group_by_length=True,
learning_rate=7e-5,
warmup_steps=50,
lr_scheduler_type="linear",
num_train_epochs=3,
logging_strategy="steps",
logging_steps=5,
save_strategy="steps",
run_name="nq",
disable_tqdm=False,
report_to="wandb",
remove_unused_columns=False,
fp16=False,
)
```
Trainer is not logging eval loss. Any idea why??
---
**Author:**  [@lewtun](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Flewtun)%5C
**Post date:** [April 26, 2021, 8:50am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ftrainer-not-logging-eval-loss%2F5760%2F2 "2021-04-26T08:50:13Z")
hey @vasudevgupta, is is possible that you’re not providing the correct labels / label names for the loss to be computed?
judging by `output_dir`, it looks like you’re doing question answering, in which case the trainer looks for the column names `["start_positions", "end_positions"]` in the `label_names` argument.
---
**Author:**  [@vasudevgupta](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fvasudevgupta)%5C
**Post date:** [April 26, 2021, 4:37pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ftrainer-not-logging-eval-loss%2F5760%2F3 "2021-04-26T16:37:47Z")
@lewtun, yes it was question-answering, I am inheriting my model class from `BigBirdForQuestionAnswering`.
It worked for me when I am passing appropriate values in `label_names` argument. Thanks a lot!