pdf printing problem - by: gregius

Version : 7.4.3
I have a pdf printing problem. It worked for several documents and now not anymore. didn't changed anything. I tried to update from 7.4.2 to 7.4.3... nothing changed
here is the log :
2019-03-20 11:06:07.797 ***** ERROR ***** [V7.4.3] ERROR *****
2019-03-20 11:06:07.806 ***** ERROR ***** [V7.4.3] on file '/home/becquerexz/www/projeqtor/external/html2pdf/src/Html2Pdf.php' at line (5261)
2019-03-20 11:06:07.806 ***** ERROR ***** [V7.4.3] cause = Undefined offset: 1

Thanks to help