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 /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php:1441 Stack trace: #0 /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1407): Spipu\Html2Pdf\Html2Pdf->_executeAction(Object(Spipu\Html2Pdf\Parsing\Node)) #1 /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(5589): Spipu\Html2Pdf\Html2Pdf->_makeHTMLcode() #2 /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1439): Spipu\Html2Pdf\Html2Pdf->_tag_open_TD(Array) #3 /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php(1393): Spipu\Html2Pdf\Html2Pdf->_executeAction(Object(Spipu\Html2Pdf\Parsin in /www/htdocs/w01782f6/vhs-crailsheim.de/fileadmin/kuferweb/extern/composer/vendor/spipu/html2pdf/src/Html2Pdf.php on line 1441