Trying PCA on spark but serialization is error thrown

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Trying PCA on spark but serialization is error thrown

Hi, I tried to used the PCA object in one of my project but end up receiving a serialization error. Any help would be appreciated. Example taken from https://spark.apache.org/docs/latest/mllib-feature-extraction.html#pca My Code: val selector = new PCA(20) val transformer = selector.fit(discretiz