Error while fetching the Report for Role Details

When we try to fetch report for displaying role for a disconnected application we are getting the below error:

sailpoint.tools.GeneralException: sailpoint.tools.GeneralException: The application script threw an exception: java.lang.NullPointerException BSF info: script at line: 0 column: columnNo
at sailpoint.api.DynamicValuator.evaluate(DynamicValuator.java:404)
at sailpoint.reporting.datasource.DataSourceColumnHelper.runColumnRenderer(DataSourceColumnHelper.java:57)
at sailpoint.reporting.datasource.BaseProjectionDataSource.getFieldValue(BaseProjectionDataSource.java:250)
at sailpoint.reporting.JasperCsvWriter.write(JasperCsvWriter.java:118)
at sailpoint.reporting.LiveReportExecutor.execute(LiveReportExecutor.java:275)
at sailpoint.api.TaskManager.runSync(TaskManager.java:909)
at sailpoint.api.TaskManager.runSync(TaskManager.java:724)
at sailpoint.scheduler.JobAdapter.execute(JobAdapter.java:128)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)

Please suggest a solution.

@deepmazumderDSB
Please share your Role related xml and also task definition corresponding to the report xml