TypeError: __new__() got an unexpected keyword argument 'singleheaded_classes'

[AldrichCabrera]

Hi, I got the following error by I running the "test.py" script:

File "test.py", line 37, in
ewc = EWCClassifier(fisher_n=0,ewc_lambda=0.1,model=model)
TypeError: new() got an unexpected keyword argument 'fisher_n'

I don't know what it is, I've been looking for a way to solve it but I haven't found it. If you could support me with some help I would be grateful, greetings.