I don’t understand Jxls error – Failed to find last cell ref attribute ‘lastCell’

use library: jxls 2.11.0 / jxls-poi 2.11.0 / apahce poi and poi-ooxml 4.1.2

Jxls warnning :

[WARN ] : lsCommentAreaBuilder : Failed to find last cell ref attribute 'lastCell' for command 'area' in cell MSSEET!A1 [WARN ] : lsCommentAreaBuilder : Failed to find last cell ref attribute 'lastCell' for command 'each' in cell MSSEET!A4

Code:

try {
    InputStream is = new ClassPathResource(templatePath).getInputStream();
    ClassPathResource cpr = new ClassPathResource(filePath);
    try {
        OutputStream os  = new FileOutputStream(filePath);

        Context context = new Context();
        context.putVar("invoice", excelParam);
        context.putVar("list", excelParam.getList());
        context.putVar("file_path", filePath);


        // Context context1 = PoiTransformer.createInitialContext();
        // context1.putVar("invoice", excelParam);

        JxlsHelper.getInstance().processTemplate(is, os, context);

        os.flush();
        os.close();

    } catch (Exception e) {
        log.error("error", e);

    }
} catch (Exception e1) {
    log.error("error", e1);
}

excel:

enter image description here

A1 cell memo ; jx:area(lastCell=“N4”)

A4 cell memo : jx:each(items=“list” var=“c” lastCell=“N4”)

Someone help me

I don’t understand Jxls error – Failed to find last cell ref attribute ‘lastCell’