referencing bean properties not listed in my "Visible Columns"

[mobileWMS]

I referenced this on Vaadin forums here.

In my case, I am getting exceptions that are related to referencing bean properties not listed in the visible columns I give it. Why? What am I doing wrong? Is this a bug with the add-on or with my code?

Here is the code:

private ExportToExcelUtility<WrappedReplenishmentOrder> customizeExportExcelUtility(
            Object[] columns, String[] names, Grid grid, String title )
    {
        /* Configuring Components */
        ExportExcelComponentConfiguration componentConfig1;
        List<ComponentHeaderConfiguration> headerConfig = Arrays.asList(
                new ComponentHeaderConfigurationBuilder().withColumnHeaderKeys(
                names).build());
        componentConfig1 = new ExportExcelComponentConfigurationBuilder().withGrid(grid)
                .withVisibleProperties(columns)
                .withHeaderConfigs(headerConfig)
//                .withColumnConfigs(value)
                .build();

        /* Configuring Sheets */
        ArrayList<ExportExcelComponentConfiguration> componentList1 = new ArrayList<ExportExcelComponentConfiguration>();
        componentList1.add(componentConfig1);

        ExportExcelSheetConfiguration sheetConfig1;
        sheetConfig1 = new ExportExcelSheetConfigurationBuilder()
                .withReportTitle(title + " Report")
                .withSheetName(title)
                .withComponentConfigs(componentList1)
                .withIsHeaderSectionRequired(Boolean.TRUE)
                .build();

        /* Configuring Excel */
        ArrayList<ExportExcelSheetConfiguration> sheetList = new ArrayList<ExportExcelSheetConfiguration>();
        sheetList.add(sheetConfig1);
        
        String generatedBy = "Website";
        
        if( loginUser instanceof User )
        {
            String tempUser = null;
            
            if( loginUser.getUserInfo() instanceof UserResponseType )
            {
                if( loginUser.getUserInfo().getFirstName() instanceof String     &&
                        loginUser.getUserInfo().getLastName() instanceof String &&
                        !loginUser.getUserInfo().getLastName().trim().isEmpty()    &&
                        !loginUser.getUserInfo().getFirstName().trim().isEmpty())
                {
                    tempUser = loginUser.getUserInfo().getFirstName().trim() + " " +
                            loginUser.getUserInfo().getLastName().trim();
                }
            }
            
            if( tempUser instanceof String && !tempUser.trim().isEmpty() )
            {
                generatedBy = tempUser;
            }
            else if( loginUser.getUserName() instanceof String &&
                    !loginUser.getUserName().trim().isEmpty())
            {
                generatedBy = loginUser.getUserName().trim();
            }
            else if( loginUser.getUserId() instanceof String &&
                    !loginUser.getUserId().trim().isEmpty())
            {
                generatedBy = loginUser.getUserId().trim();
            }
        }
        
        ExportExcelConfiguration config1;
        config1 = new ExportExcelConfigurationBuilder()
                .withGeneratedBy(generatedBy)
                .withSheetConfigs(sheetList)
                .build();

        return new ExportToExcelUtility<WrappedReplenishmentOrder>(grid.getUI(), config1, WrappedReplenishmentOrder.class);
    }

The last line gives the exceptions/logs below:

Mar 09, 2018 6:42:07 PM org.vaadin.addons.excelexporter.ExportToExcelUtility getAllMethods
INFO: getAllMethods) throws + com.mobiwms.website.data.wrappers.WrappedReplenishmentOrder.getDateTimeFmt()
Mar 09, 2018 6:42:07 PM org.vaadin.addons.excelexporter.ExportToExcelUtility getAllMethods
INFO: getAllMethods) throws + com.mobiwms.website.data.wrappers.WrappedReplenishmentOrder.isDateTimeFmt()
java.lang.NoSuchMethodException: com.mobiwms.website.data.wrappers.WrappedReplenishmentOrder.getDateTimeFmt or com.mobiwms.website.data.wrappers.WrappedReplenishmentOrder.isDateTimeFmt not found!
    at org.vaadin.addons.excelexporter.ExportToExcelUtility.getAllMethods(ExportToExcelUtility.java:1354)
    at org.vaadin.addons.excelexporter.ExportToExcelUtility.lambda$performPreprocessing$0(ExportToExcelUtility.java:185)
    at java.lang.Thread.run(Thread.java:745)
Mar 09, 2018 6:42:07 PM org.vaadin.addons.excelexporter.ExportToExcelUtility getAllMethods
INFO: getAllMethods) throws + com.wmsvision.jaxb.SupplierPortal.impl.ReplenishmentOrderImpl.get__qName()
Mar 09, 2018 6:42:07 PM org.vaadin.addons.excelexporter.ExportToExcelUtility getAllMethods
INFO: getAllMethods) throws + com.wmsvision.jaxb.SupplierPortal.impl.ReplenishmentOrderImpl.is__qName()
java.lang.NoSuchMethodException: com.wmsvision.jaxb.SupplierPortal.impl.ReplenishmentOrderImpl.get__qName or com.wmsvision.jaxb.SupplierPortal.impl.ReplenishmentOrderImpl.is__qName not found!
    at org.vaadin.addons.excelexporter.ExportToExcelUtility.getAllMethods(ExportToExcelUtility.java:1354)
    at org.vaadin.addons.excelexporter.ExportToExcelUtility.lambda$performPreprocessing$0(ExportToExcelUtility.java:185)
    at java.lang.Thread.run(Thread.java:745)

Thanks.