Docx4j unexpected element (uri:“http://schemas.openxmlformats.org/wordprocessingml/2006/main”, local:“p”)

Docx4j unexpected element (uri:“http://schemas.openxmlformats.org/wordprocessingml/2006/main”, local:“p”) I am trying add html table in to the another word table' cell.

• I can add html table in to the another word table' cell. (OK) 
• I can generated last word document call lastDocument.docx (OK) 
• I can not load again WordprocessingMLPackage.load(lastDocument.docx), throw this exception Docx4j unexpected element (uri:"http://schemas.openxmlformats.org/wordprocessingml/2006/main", local:"p") this is my code:

This code will be run

Tr workingRow = (Tr) XmlUtils.deepCopy(templateRow);
    List<?> textElements = WMLPackageUtils.getTargetElements(workingRow, Text.class);

    List<Tc> tcList = WMLPackageUtils.getTargetElements(workingRow, Tc.class);
    Tc tc = WMLPackageUtils.getTc(tcList, "${Replace_Tex1}");

    XHTMLImporterImpl XHTMLImporter = new XHTMLImporterImpl(wordMLPackage);
    XHTMLImporter.setParagraphFormatting(FormattingOption.IGNORE_CLASS);
    XHTMLImporter.setTableFormatting(FormattingOption.IGNORE_CLASS);
    for (Object object : textElements) {
        Text text = (Text) object;
        if (!text.getValue().equals("${Replace_Tex1}"))
            continue;
        String replacementValue = (String) replacements.get(text.getValue());
        //text.setValue(replacementValue);

 R r = (R) text.getParent();

     P paragraphOfText = wordMLPackage.getMainDocumentPart().createParagraphOfText("");
     paragraphOfText.getContent().clear();

     r.getContent().clear();eviewtable.getContent().add(new Tr(new Tc(itemTable, new Paragraph())));
     tc.getContent().addAll(XHTMLImporter.convert(replacementValue, null));
     tc.getContent().add(paragraphOfText);