java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.apache.hadoop.hbase.spark.HBaseRelation.(DefaultSource.scala:125)
at org.apache.hadoop.hbase.spark.DefaultSource.createRelation(DefaultSource.scala:74)
at org.apache.spark.sql.execution.datasources.ResolvedDataSource$.apply(ResolvedDataSource.scala:222)
at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:148)
at undefined.$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:36)
at undefined.$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:41)
at undefined.$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:43)
at undefined.$iwC$$iwC$$iwC$$iwC$$iwC.(:45)
at undefined.$iwC$$iwC$$iwC$$iwC.(:47)
at undefined.$iwC$$iwC$$iwC.(:49)
at undefined.$iwC$$iwC.(:51)

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