SupervisedTemplate giving errors

[h-0-0]

Hello, I'm trying to use the SupervisedTemplate, however, it's not working and I'm getting the following errors:

File "/home/jd18380/Documents/FixedStream/run.py", line 85, in regular
cl_strategy = SupervisedTemplate(

File`` "/home/jd18380/Documents/venv_CL-exp/lib/python3.8/site-packages/avalanche/training/templates/common_templates.py", line 128, in __init__super().init() # type: ignore

File "/home/jd18380/Documents/venv_CL-exp/lib/python3.8/site-packages/avalanche/training/templates/observation_type/batch_observation.py", line 18, in __init__super().init()

TypeError: init() missing 2 required positional arguments: 'model' and 'optimizer'

I'm calling SupervisedTemplate as follows:
cl_strategy = SupervisedTemplate( model, optimizer, criterion = CrossEntropyLoss(), train_epochs=epochs, train_mb_size = batch_size, eval_mb_size = batch_size, evaluator=eval_plugin, device = device )
So am unsure as to why I am getting an error, as I am providing both the model and the optimizer.

[AntonioCarta]

This is due to a backward-incompatible change in typing_extensions. We are still investigating this problem, but you can temporarily solve it by using typing_extensions==4.4.0.

[h-0-0]

Thanks! this fixed it.