Fatal error: Uncaught exception 'Mpdf\MpdfException' with message 'WriteHTML() requires $html be an integer, float, string, boolean or an object with the __toString() magic method.' in /home/swissrestaura/public_html/ctrl/vendor/mpdf/mpdf/src/Mpdf.php:14634 Stack trace: #0 /home/swissrestaura/public_html/ctrl/revlog_pdf.php(39): Mpdf\Mpdf->WriteHTML(NULL) #1 {main} thrown in /home/swissrestaura/public_html/ctrl/vendor/mpdf/mpdf/src/Mpdf.php on line 14634