Retriever Training Error with train_dense_encoder.py

[AIML-YOGI]

Getting the below error any ideas?

Running on T4 Linux -
$ python train_dense_encoder.py \ train_datasets=[nq_train] \ dev_datasets=[nq_dev] \ train=biencoder_local

Log
2022-06-03 17:05:29.993413: I tensorflow/stream_executor/platform/default/dso_loader.cc:53] Successfully opened dynamic library libcudart.so.11.0
train_dense_encoder.py:747: UserWarning:
The version_base parameter is not specified.
Please specify a compatability version level, or None.
Will assume defaults for version 1.1
@hydra.main(config_path="conf", config_name="biencoder_train_cfg")
[140158170493888] 2022-06-03 17:05:31,592 [INFO] root: Sys.argv: ['train_dense_encoder.py', ' train_datasets=[nq_train]', ' dev_datasets=[nq_dev]', ' train=biencoder_local']
[140158170493888] 2022-06-03 17:05:31,594 [INFO] root: Hydra formatted Sys.argv: ['train_dense_encoder.py', ' train_datasets=[nq_train]', ' dev_datasets=[nq_dev]', ' train=biencoder_local']

Traceback (most recent call last):
File "train_dense_encoder.py", line 790, in
main()
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/main.py", line 90, in decorated_main
_run_hydra(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/utils.py", line 389, in _run_hydra
_run_app(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/utils.py", line 452, in _run_app
run_and_report(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/utils.py", line 216, in run_and_report
raise ex
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/utils.py", line 213, in run_and_report
return func()
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/utils.py", line 453, in
lambda: hydra.run(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/hydra.py", line 105, in run
cfg = self.compose_config(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/hydra.py", line 594, in compose_config
cfg = self.config_loader.load_configuration(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/config_loader_impl.py", line 141, in load_configuration
return self._load_configuration_impl(
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/_internal/config_loader_impl.py", line 233, in _load_configuration_impl
parsed_overrides = parser.parse_overrides(overrides=overrides)
File "/anaconda/envs/py38_default/lib/python3.8/site-packages/hydra/core/override_parser/overrides_parser.py", line 96, in parse_overrides
raise OverrideParseException(
hydra.errors.OverrideParseException: LexerNoViableAltException: train_datasets=[nq_train]

[AIML-YOGI]

Forgot to add 1 additional line -
See https://hydra.cc/docs/next/advanced/override_grammar/basic for details