Sales Report2 for v2.3.1

[joe122joe]

Hello,
I used this addon  under PHP 5.6 without any issue, and after moving to PHP 7.2 its not working well, 
there is error in the log file
 

PHP Warning:  Division by zero in /home/admin/public_html/kirje1/includes/classes/sales_report2.php on line 175

and here is the line s from 167 - 175

      // execute the query
      $cnt = 0;
      $itemTot = 0;
      $sumTot = 0;
      while ($resp[$cnt] = tep_db_fetch_array($rqItems)) {
        // to avoid rounding differences round for every quantum
        // multiply with the number of items afterwords.
        $price = $resp[$cnt]['psum'] / $resp[$cnt]['pquant'];

 and the issue that if there is sales  and returns for some product like sold one and return one so it will be zero sales .  but it show on the report as nan€

 

any one have same issue?

Joe