Py4JJavaError while calling .fit() in pyspark RandomForestClassifier

Question

Im trying to run a RandomForestClassifier model on my dataset and below error pops up.Anyone knows a solution? Im using Spark version 3.3.1 and Python version 3.8.

    model_df = output.select(["features","OrderMonth"])
    train_df, test_df = model_df.randomSplit([0.7,0.3])

    from pyspark.ml.classification import RandomForestClassifier

    rfc = RandomForestClassifier(numTrees=10, labelCol="OrderMonth").fit(train_df)
                           
    rf_pred = rfc.transform(test_df)
    rf_pred.show()

Py4JJavaError Traceback (most recent call last) <ipython-input-56-5ed675f09e07> in <module> 7 from pyspark.ml.classification import RandomForestClassifier 8 ----> 9 rfc = RandomForestClassifier(numTrees=10, labelCol="OrderMonth").fit(train_df)#change n_e to a bigger number 10 11 #rfc.fit(X_train,y_train)