表格单元格内的Inline Image无法复制到新文档问题

我开发了一个Google Apps Script程序，在表单提交时会将多个文档内容复制到新建文档中，但目前遇到表格内嵌入的Inline Image无法复制的问题。

提交表单时，我收到邮件警报，提示代码中var dstImg = dstParagraph.insertInlineImage(l, srcImg.getBlob());这一行出现Service unavailable: Documents错误。

已排查的内容 #

• 确认使用的是Inline Image而非Fixed Image
• 已启用Google Docs和Drive API
• 查阅过多个Stack Overflow相关问题，但未找到解决方法

参考过的Stack Overflow资源 #

• Google Apps Script - appendParagraph with image
• Images disappear when nested inside a table and appended to a new document. Bug or did I miss something?
• How to copy image from one table cell to another within google documents using a google script (programmatically)?
• Paragraphs with inline images breaking app script merging sheet data into doc

相关代码 #

function CreateDocumentInFolder(e) {

 var formResponse = e.response;
 var itemResponses = formResponse.getItemResponses();
 var question_twelve_answer = itemResponses[12].getResponse();

 var page_number_template = DriveApp.getFileById('10HNrpwxkZsO7ulr8b61pvB6fnclLKMDbNUWI0Nw9Y9g')
 var student_lp = page_number_template.makeCopy( DriveApp.getFolderById('1a5k6yBqcQUL-g21oiCj3_wK9Njn-xML1'))

 var main_file_ID = student_lp.getId()
 var doc = DocumentApp.openById(main_file_ID)
 var body = DocumentApp.openById(main_file_ID).getBody();
 var otherBody12 = DocumentApp.openById('1WFEvhnW2FDtfBrDPiPXH1U09DD8mg6PA_Q6afciSLgU').getBody();

 if (question_twelve_answer != 'm<12') {
    var totalElements = otherBody12.getNumChildren();
      for( var j = 0; j < totalElements; ++j ) {
        console.log(j);
        var element = otherBody12.getChild(j).copy();
        var type = element.getType();
        if( type == DocumentApp.ElementType.PARAGRAPH ) {
          body.appendParagraph(element);
        }
        else if( type == DocumentApp.ElementType.TABLE ) {
          var dstTable = body.appendTable(element);
          var srcTable = element.asTable();
          copyTable(srcTable, dstTable);
        }
        else if( type == DocumentApp.ElementType.LIST_ITEM )
          body.appendListItem(element);
        else
          throw new Error("Unknown element type: "+type);
    }
     body.appendPageBreak()
  }
 doc.saveAndClose()
}

function copyTable(srcTable, dstTable) {
  var row = srcTable.getNumRows();
  for (var i = 0; i < row; i++) {
    var col = srcTable.getRow(i).getNumCells();
    for (var j = 0; j < col; j++) {
      var cell = srcTable.getCell(i, j);
      var c1 = cell.getNumChildren();
      for (var k = 0; k < c1; k++) {
        var ty = cell.getChild(k).getType();
        if (ty === DocumentApp.ElementType.TABLE) {
          srcTable = cell.getChild(k).asTable();
          dstTable = dstTable.getCell(i, j).getChild(k).asTable();
          return copyTable(srcTable, dstTable);
        } else {
          var paragraph = cell.getChild(k).asParagraph();
          var c2 = paragraph.getNumChildren();
          for (var l = 0; l < c2; l++) {
            var child = paragraph.getChild(l);
            var t = child.getType();
            if (t === DocumentApp.ElementType.INLINE_IMAGE) {
              var srcImg = child.asInlineImage();
              var dstParagraph = dstTable.getCell(i, j).getChild(k).asParagraph();
              dstParagraph.getChild(l).asInlineImage().removeFromParent();
              // Issue is the line below!
              var dstImg = dstParagraph.insertInlineImage(l, srcImg.getBlob());
              dstImg.setWidth(srcImg.getWidth());
              dstImg.setHeight(srcImg.getHeight());
            }
          }
        }
      }
    }
  }
}

内容的提问来源于stack exchange，提问作者Actualvarric