You are trying to SET the value of a Spark config in a notebook and get a Cannot modify the value of a Spark config error.
%sql SET spark.serializer=org.apache.spark.serializer.KryoSerializer
Error in SQL statement: AnalysisException: Cannot modify the value of a Spark config: spark.serializer;
The SET command does not work on SparkConf entries. This is by design in Spark 3.0 and above.
You should remove SET commands for SparkConf entries from your notebook.