“Parquet column cannot be converted in file, Pyspark Expected string Found: INT32.”

I encountered the following error, “Parquet column cannot be converted in file, Pyspark Expected string Found: INT32.” I tried to convert the column to INT32 (Applying withColumn(), but the error persisted. I tried add the statement, “spark.conf.set("spark.sql.parquet.enableVectorizedReader","false", but that did not help either. I wold appreciate very much your insights. Thanks