Got NullPointerException during editing chart plot at Jaspersoft Studio - jaspersoft-studio

Question

I am trying to access the "Chart Plot" tab of my bar chart in order to change the orientation to horizontal but I'm getting this error with no further details
This error also appears when I click this tab on the other pie chart of the file.
This is the jrxml file:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.13.0.final using JasperReports Library version 6.13.0-46ada4d1be8f3c5985fd0b6146f3ed44caed6f05 -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="consumption_template" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="c2376118-5b9b-47c0-b7d6-a20b65a05ffb">
<subDataset name="totalKgClothesPieDataSet" uuid="72727fea-d56b-46dd-8104-9ddbf35dad68">
<parameter name="params" class="com.dosiper.laundryserver.laundry.statistics.consumption.dto.export.equipment.pdf.ExportConsumptionPDFParameters"/>
<field name="name" class="java.lang.String"/>
<field name="kgRealPercentage" class="java.lang.Double"/>
</subDataset>
<subDataset name="totalKgClothesBarDataSet" uuid="cc72577b-9c33-4f93-bc5a-0460f7084532">
<parameter name="params" class="com.dosiper.laundryserver.laundry.statistics.consumption.dto.export.equipment.pdf.ExportConsumptionPDFParameters"/>
<field name="name" class="java.lang.String"/>
<field name="kgReal" class="java.lang.Double"/>
</subDataset>
<parameter name="params" class="com.dosiper.laundryserver.laundry.statistics.consumption.dto.export.equipment.pdf.ExportConsumptionPDFParameters"/>
<field name="totalKgClothesPieDataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<field name="totalKgClothesBarDataSource" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<group name="TotalKgClothes">
<groupHeader>
<band height="552">
<pieChart>
<chart isShowLegend="false" evaluationTime="Report">
<reportElement key="" positionType="Float" isPrintRepeatedValues="false" x="8" y="160" width="540" height="392" uuid="f656a8cf-a3d7-48ee-8128-a7fac530f9ca"/>
<chartTitle>
<font fontName="Arial" size="14" isBold="true"/>
<titleExpression><![CDATA[$P{params}.getTotalKgClothesPieChartTitle()]]></titleExpression>
</chartTitle>
<chartSubtitle/>
<chartLegend/>
</chart>
<pieDataset maxCount="30">
<dataset resetType="Report">
<datasetRun subDataset="totalKgClothesPieDataSet" uuid="e50e959c-3556-430b-97b2-c9bc4ccc10f2">
<datasetParameter name="params">
<datasetParameterExpression><![CDATA[$P{params}]]></datasetParameterExpression>
</datasetParameter>
<dataSourceExpression><![CDATA[$F{totalKgClothesPieDataSource}]]></dataSourceExpression>
</datasetRun>
</dataset>
<keyExpression><![CDATA[$F{name}]]></keyExpression>
<valueExpression><![CDATA[$F{kgRealPercentage}]]></valueExpression>
<labelExpression><![CDATA[$F{name}.toLowerCase()]]></labelExpression>
</pieDataset>
<piePlot>
<plot/>
<itemLabel/>
</piePlot>
</pieChart>
</band>
</groupHeader>
</group>
<group name="TotalKgClothesBarChart">
<groupHeader>
<band height="367">
<barChart>
<chart evaluationTime="Report">
<reportElement x="8" y="10" width="542" height="350" uuid="d4072751-ba5d-4c03-8a2d-f2ab02960e59"/>
<chartTitle>
<font fontName="Arial" size="14" isBold="true"/>
<titleExpression><![CDATA[$P{params}.getTotalKgClothesBarChartTitle()]]></titleExpression>
</chartTitle>
<chartSubtitle/>
<chartLegend/>
</chart>
<categoryDataset>
<dataset resetType="Report">
<datasetRun subDataset="totalKgClothesBarDataSet" uuid="a763eb3e-b77a-4976-9264-475e19713a73">
<dataSourceExpression><![CDATA[$F{totalKgClothesBarDataSource}]]></dataSourceExpression>
</datasetRun>
</dataset>
<categorySeries>
<seriesExpression><![CDATA[$F{name}]]></seriesExpression>
<categoryExpression><![CDATA[$F{name}]]></categoryExpression>
<valueExpression><![CDATA[$F{kgReal}]]></valueExpression>
<labelExpression><![CDATA[$F{name}]]></labelExpression>
</categorySeries>
</categoryDataset>
<barPlot>
<plot/>
<itemLabel/>
<categoryAxisFormat>
<axisFormat labelColor="#000000" tickLabelColor="#000000" axisLineColor="#000000"/>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat labelColor="#000000" tickLabelColor="#000000" axisLineColor="#000000"/>
</valueAxisFormat>
</barPlot>
</barChart>
</band>
</groupHeader>
</group>
</jasperReport>
If possible, do you know how to edit the jrxml file to add the "horizontal" orientation manually?

Answer 1

This seems to be something related to version 6.13.0, it works with version "6.12.2" so I just opened an issue in their bug tracker.
Thanks.