import nemo.collections.asr as nemo_asr generates an error?
State: closed | Pull request: no
Labels: name: bug

I tried to execute the tutorial:  [](https://github.com/NVIDIA/NeMo/blob/v1.0.2/tutorials/speaker_recognition/Speaker_Recognition_Verification.ipynb)

Unfortunately, the line `import nemo.collections.asr as nemo_asr` is not working and generates an error like:
```
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-18-7cc0b6be15f9> in <module>()
      3 # NeMo's ASR collection - this collections contains complete ASR models and
      4 # building blocks (modules) for ASR
----> 5 import nemo.collections.asr as nemo_asr
      6 from omegaconf import OmegaConf

8 frames
/usr/local/lib/python3.7/dist-packages/nemo/collections/asr/__init__.py in <module>()
     13 # limitations under the License.
     14 
---> 15 from nemo.collections.asr import data, losses, models, modules
     16 from nemo.package_info import __version__
     17 

/usr/local/lib/python3.7/dist-packages/nemo/collections/asr/losses/__init__.py in <module>()
     13 # limitations under the License.
     14 
---> 15 from nemo.collections.asr.losses.angularloss import AngularSoftmaxLoss
     16 from nemo.collections.asr.losses.ctc import CTCLoss

/usr/local/lib/python3.7/dist-packages/nemo/collections/asr/losses/angularloss.py in <module>()
     16 import torch
     17 
---> 18 from nemo.core.classes import Loss, Typing, typecheck
     19 from nemo.core.neural_types import LabelsType, LogitsType, LossType, NeuralType
     20 

/usr/local/lib/python3.7/dist-packages/nemo/core/__init__.py in <module>()
     14 
     15 import nemo.core.neural_types
---> 16 from nemo.core.classes import *

/usr/local/lib/python3.7/dist-packages/nemo/core/classes/__init__.py in <module>()
     14 
     15 
---> 16 from nemo.core.classes.common import (
     17     FileIO,
     18     Model,

/usr/local/lib/python3.7/dist-packages/nemo/core/classes/common.py in <module>()
     25 from typing import Dict, List, Optional, Union
     26 
---> 27 import hydra
     28 import wrapt
     29 from omegaconf import DictConfig, OmegaConf

/usr/local/lib/python3.7/dist-packages/hydra/__init__.py in <module>()
      3 # Source of truth for Hydra's version
      4 __version__ = "1.1.0"
----> 5 from hydra import utils
      6 from hydra.errors import MissingConfigException
      7 from hydra.main import main

/usr/local/lib/python3.7/dist-packages/hydra/utils.py in <module>()
      6 from typing import Any, Callable
      7 
----> 8 import hydra._internal.instantiate._instantiate2
      9 import hydra.types
     10 from hydra._internal.utils import _locate

/usr/local/lib/python3.7/dist-packages/hydra/_internal/instantiate/_instantiate2.py in <module>()
      6 from typing import Any, Callable, Sequence, Tuple, Union
      7 
----> 8 from omegaconf import OmegaConf, SCMode
      9 from omegaconf._utils import is_structured_config
     10 

ImportError: cannot import name 'SCMode' from 'omegaconf' (/usr/local/lib/python3.7/dist-packages/omegaconf/__init__.py)

---------------------------------------------------------------------------
NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.
---------------------------------------------------------------------------
```

and in the code there is a red line below `import nemo.collections.asr as nemo_asr`.
I am executing the tutorial on colab.