Error Class DOMDocument

  • Hi,

    The plugin doesn’t work. The following error message appears:

    Fatal error: Uncaught Error: Class ‘DOMDocument’ not found in /var/www/wp/wp-content/plugins/wp-html-mail/vendor/voku/simple_html_dom/src/voku/helper/HtmlDomParser.php:118 Stack trace: #0 /var/www/wp/wp-content/plugins/wp-html-mail/vendor/voku/simple_html_dom/src/voku/helper/HtmlDomParser.php(185): voku\helper\HtmlDomParser->__construct() #1 /var/www/wp/wp-content/plugins/wp-html-mail/vendor/voku/css-to-inline-styles/src/CssToInlineStyles.php(250): voku\helper\HtmlDomParser::__callStatic(‘str_get_html’, Array) #2 /var/www/wp/wp-content/plugins/wp-html-mail/includes/class-haet-mail.php(489): voku\CssToInlineStyles\CssToInlineStyles->convert() #3 /var/www/wp/wp-content/plugins/wp-html-mail/includes/class-haet-mail.php(196): Haet_Mail->inline_css(‘<!DOCTYPE html>…’) #4 /var/www/wp/wp-includes/class-wp-hook.php(286): Haet_Mail->print_admin_page(”) #5 /var/www/wp/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array) #6 /var/www/wp/wp-includes/plugin.php in /var/www/wp/wp-content/plugins/wp-html-mail/vendor/voku/simple_html_dom/src/voku/helper/HtmlDomParser.php on line 118

    The WordPress version is 4.9.2

    Any solution?

    Best regards

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