Error with Do operator.

[brrbaral]

Hi, pywhy I am having issue with implementing 'do' operator.

Error:
AttributeError: 'int' object has no attribute 'copy'

Code that is producing error

import dowhy.datasets
dataset = dowhy.datasets.lalonde_dataset()
dataset=dataset.replace({True:1,False:0})
dataset
treatment_col='treat'
outcome_col='re78'
from dowhy import CausalModel
model=CausalModel(
        data = dataset,
        treatment=treatment_col,
        outcome=outcome_col,
        common_causes='nodegr+black+hisp+age+educ+married'.split('+'))
model
identified_estimand = model.identify_effect(proceed_when_unidentifiable=True)
print(identified_estimand)
# Estimate with confidence intervals and p-values
estimate = model.estimate_effect(
    identified_estimand,
    method_name="backdoor.linear_regression",
    test_significance=True
)
estimate.value
estimate.get_confidence_intervals()
estimate.estimator.do(x=1,data_df=dataset)

Version information:

• 0.11.1

Thank you