As per the title, when attempting to use the ExtraTreesRegressor class an sklearn.utils._param_validation.InvalidParameterError exception is raised as below.

sklearn.utils._param_validation.InvalidParameterError: The 'criterion' parameter of ExtraTreesRegressor must be a str among {'squared_error', 'poisson', 'friedman_mse', 'absolute_error'}. Got 'mse' instead.

The ExtraTreesRegressor.criterion attribute is set using a default optional argument to the constructor with the value mse. It looks like this criterion value was removed in sklearn 1.2 as per this commit.

It should be an easy fix. Just requires changing the default argument for criterion to either friedman_mse or squared_error I guess... Not sure which one of these would be most appropriate as the default...