WriteHtml Can'；在mpdf中无法正常工作在php mvc中发送带有附件的邮件？

我试图从mpdf库的html中生成pdf，并发送带有pdf文件附件的邮件，但我做不到。WriteHtml无法响应

Headers no-store no-chach type:html/text
$mpdf = $StockModel->getPdfObj();
$mpdf->allow_charset_conversion = true;
$mpdf->charset_in = 'ISO-8859-2';       
//$mpdf->allow_html_optional_endtags = true;
//$mpdf->restoreBlockPageBreaks = true; 
$mpdf->useOnlyCoreFonts = true;   
//$mpdf->SetProtection(array('print')); 
$mpdf->SetHeader('|'.$stype.'|Date '.date("d-M-Y").' ');
$mpdf->SetFooter('www.angellogistic.in');
$mpdf->defaultheaderfontsize=7;
$mpdf->defaultheaderfontstyle='B';
$mpdf->defaultheaderline=0;
$mpdf->defaultfooterfontsize=7;
$mpdf->defaultfooterfontstyle='BI';
$mpdf->defaultfooterline=0;
$mpdf->SetTitle("angel logistic");
$mpdf->SetAuthor("angel logistic");
$mpdf->SetWatermarkText("angel logistic");
$mpdf->showWatermarkText = true;
$mpdf->watermark_font = 'DejaVuSansCondensed';
$mpdf->watermarkTextAlpha = 0.1;
$mpdf->SetDisplayMode('fullpage');
$mpdf->WriteHTML(utf8_encode($html));

WriteHtml给出响应：

Headers no-store no-chach type:html/text
$mpdf = $StockModel->getPdfObj();
$mpdf->allow_charset_conversion = true;
$mpdf->charset_in = 'ISO-8859-2';       
//$mpdf->allow_html_optional_endtags = true;
//$mpdf->restoreBlockPageBreaks = true; 
$mpdf->useOnlyCoreFonts = true;   
//$mpdf->SetProtection(array('print')); 
$mpdf->SetHeader('|'.$stype.'|Date '.date("d-M-Y").' ');
$mpdf->SetFooter('www.angellogistic.in');
$mpdf->defaultheaderfontsize=7;
$mpdf->defaultheaderfontstyle='B';
$mpdf->defaultheaderline=0;
$mpdf->defaultfooterfontsize=7;
$mpdf->defaultfooterfontstyle='BI';
$mpdf->defaultfooterline=0;
$mpdf->SetTitle("angel logistic");
$mpdf->SetAuthor("angel logistic");
$mpdf->SetWatermarkText("angel logistic");
$mpdf->showWatermarkText = true;
$mpdf->watermark_font = 'DejaVuSansCondensed';
$mpdf->watermarkTextAlpha = 0.1;
$mpdf->SetDisplayMode('fullpage');
$mpdf->WriteHTML(utf8_encode($html));

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在html中指定html和内联css代码和标记

为什么要将输入字符集设置为ISO-8859-2，然后将html编码为UTF8？确切的输出是什么？日志中有错误吗？设置

$mpdf->debug=true时会发生什么？为什么要将输入字符集设置为ISO-8859-2，然后将html编码为UTF8？确切的输出是什么？日志中有错误吗？设置
$mpdf->debug=true时会发生什么？
Headers no-store no-chach type:html/text
$mpdf = $StockModel->getPdfObj();
$mpdf->allow_charset_conversion = true;
$mpdf->charset_in = 'ISO-8859-2';       
//$mpdf->allow_html_optional_endtags = true;
//$mpdf->restoreBlockPageBreaks = true; 
$mpdf->useOnlyCoreFonts = true;   
//$mpdf->SetProtection(array('print')); 
$mpdf->SetHeader('|'.$stype.'|Date '.date("d-M-Y").' ');
$mpdf->SetFooter('www.angellogistic.in');
$mpdf->defaultheaderfontsize=7;
$mpdf->defaultheaderfontstyle='B';
$mpdf->defaultheaderline=0;
$mpdf->defaultfooterfontsize=7;
$mpdf->defaultfooterfontstyle='BI';
$mpdf->defaultfooterline=0;
$mpdf->SetTitle("angel logistic");
$mpdf->SetAuthor("angel logistic");
$mpdf->SetWatermarkText("angel logistic");
$mpdf->showWatermarkText = true;
$mpdf->watermark_font = 'DejaVuSansCondensed';
$mpdf->watermarkTextAlpha = 0.1;
$mpdf->SetDisplayMode('fullpage');
$mpdf->WriteHTML(utf8_encode($html));