Undefined offset: -1 in mpdf\mpdf\src\Tag\BlockTag.php

[geethzz]

When I am trying to create pdf, I am getting this error in the following line

// If already something on the line

if ($this->mpdf->cell[$this->mpdf->row][$this->mpdf->col]['s'] > 0 && !$this->mpdf->nestedtablejustfinished) // this condition returns this error

I have tried to print $this->mpdf->cell[$this->mpdf->row][$this->mpdf->col]['s'] and it is 0

and $this->mpdf->nestedtablejustfinished is empty