I am trying to train a Bayesian Network or a Naive Bayes Classifier using pyAgrum, but I keep on getting the following type of error:

[pyAgrum] Object not found: label '17' is unknown in number_inpatient:Integer({0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|18|19}

This is my code:

ClassfromBN = skbn.BNClassifier(
  learningMethod="MIIC",
  scoringType = "AIC",
  prior="Smoothing",
  DirichletCsv = None,
  constraints = None,
  possibleSkeleton = None,
  priorWeight=2,
  discretizationStrategy="kmeans",
  discretizationNbBins = 4,
  discretizationThreshold= 20,
  usePR=False,
  significant_digit=13
)

cv = cross_validate(ClassfromBN, df_filled.drop(target,axis=1), df_filled[target], cv=5)
cv['test_score'].mean()