Describe the issue:
install the nni with pip install nni

start a simple HPO experiment, it always occurs following error about type check

"valueerror: experimentconfig: type of experiment_name (none) is not typing.union[str, nonetype]"

I find that the typeguard is v3.0.0 installed by nni(with pip install nni). If I change the typeguard version to v2.13.3, the error disappears.

Environment:

• NNI version: 2.10
• Training service (local|remote|pai|aml|etc): local
• Client OS: ubuntu 18.04
• Server OS (for remote mode only):
• Python version: python3.7
• PyTorch/TensorFlow version: 1.10
• Is conda/virtualenv/venv used?:
• Is running in Docker?: yes

Configuration:

• Experiment config (remember to remove secrets!):
• Search space:

Log message:

• nnimanager.log:
• dispatcher.log:
• nnictl stdout and stderr:

How to reproduce it?: