Fatal error: Uncaught Spipu\Html2Pdf\Exception\HtmlParsingException: The html tag [acronym] is not known by Html2Pdf. You can create it and push it on the Html2Pdf GitHub project. in /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php:1404 Stack trace: #0 /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1370): Spipu\Html2Pdf\Html2Pdf->_executeAction(Object(Spipu\Html2Pdf\Parsing\Node)) #1 /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(5687): Spipu\Html2Pdf\Html2Pdf->_makeHTMLcode() #2 /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1402): Spipu\Html2Pdf\Html2Pdf->_tag_open_TD(Array) #3 /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1356): Spipu\Html2Pdf\Html2Pdf->_executeAction(Object(Spipu\Html2Pdf\Parsing\Node)) #4 /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(564): Spipu\Html2Pdf\Html2Pdf->_makeHTMLcode() #5 in /home/www/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php on line 1404