how to resolve min/max width error domp while generating pdf?

i'm getting the following error in my code while converting to pdf

there's no inline block statement included and width is defined for every table header still issue is persistent

<?php
//print_invoice.php
if(isset($_GET["pdf"]) && isset($_GET["id"]))
{
    require_once 'pdf.php';
    include('connection2.php');
    $output = '';
    $statement = $connect->prepare("
  SELECT * FROM POrder
  WHERE order_id = :order_id
  LIMIT 1
 ");
    $statement->execute(
    array(
        ':order_id'       =>  $_GET["id"]
    )
);
$result = $statement->fetchAll();
foreach($result as $row)
{
    $output .= '
   <table width="100%" border="1" cellpadding="5" cellspacing="0">
<tr>
 <td colspan="2" align="center" style="font-size:18px"><b>Invoice</b></td>
</tr>
<tr>
 <td colspan="2">
  <table width="100%" cellpadding="5">
   <tr>
    <td width="65%">
     To,<br />
     <b>Vendors Name</b><br />
     Name : '.$row["vendorname"].'<br />
     Description : '.$row["description"].'<br />
    </td>
    <td width="35%">
     Reverse Charge<br />
     Invoice No. : '.$row["order_no"].'<br />
     Invoice Date : '.$row["order_date"].'<br />
    </td>
   </tr>
  </table>
  <br />
  <table width="100%" border="1" cellpadding="5" cellspacing="0">
   <tr>
    <th>Sr No.</th>
    <th>Item Name</th>
    <th>Quantity</th>
    <th>Price</th>
    <th>Actual Amt.</th>
    <th colspan="2">GST (%)</th>
    <th rowspan="2">Total</th>
   </tr>
   <tr>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
    <th>Rate</th>
    <th>Amt.</th>
   </tr>';
    $statement = $connect->prepare(
            "SELECT * FROM POrder_item
   WHERE order_id = :order_id"
       );
        $statement->execute(
        array(
            ':order_id'       =>  $_GET["id"]
        )
    );
    $item_result = $statement->fetchAll();
    $count = 0;
    foreach($item_result as $sub_row)
    {
            $count++;
            $output .= '
   <tr>
    <td>'.$count.'</td>
    <td>'.$sub_row["item_name"].'</td>
<td>'.$sub_row["item_quantity"].'</td>
<td>'.$sub_row["item_price"].'</td>
<td>'.$sub_row["item_price_bt"].'</td>
<td>'.$sub_row["item_gst"].'</td>
<td>'.$sub_row["item_price_at"].'</td>
    <td>'.$sub_row["final_amount"].'</td>
   </tr>
   ';
        }
        $output .= '
  <tr>
   <td align="right" colspan="11"><b>Total</b></td>
   <td align="right"><b>'.$row["total_after_tax"].'</b></td>
  </tr>
  <tr>
   <td colspan="11"><b>Total Amt. Before Tax :</b></td>
   <td align="right">'.$row["total_before_tax"].'</td>
  </tr>
  <tr>
   <td colspan="11">Add : GST :</td>
   <td align="right">'.$row["gst"].'</td>
  </tr>
   <td colspan="11"><b>Total Tax Amt.  :</b></td>
   <td align="right">'.$row["order_total_tax"].'</td>
  </tr>
  <tr>
   <td colspan="11"><b>Total Amt. After Tax :</b></td>
   <td align="right">'.$row["total_after_tax"].'</td>
  </tr>

  ';
    $output .= '
      </table>
     </td>
   </tr>
   </table>
   ;
    }
    $pdf = new Pdf();
    $file_name = 'Invoice-'.$row["order_no"].'.pdf';
    $pdf->loadHtml($output);
    $pdf->render();
    $pdf->stream($file_name, array("Attachment" => false));
}
?>

i expect to get a pdf but instead i get this error

Fatal error: Uncaught exception 'Dompdf\Exception' with message 'Min/max width is undefined for table rows' in /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameReflower/TableRow.php:72 Stack trace: #0 /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(903): Dompdf\FrameReflower\TableRow->get_min_max_width() #1 /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameReflower/AbstractFrameReflower.php(268): Dompdf\FrameDecorator\AbstractFrameDecorator->get_min_max_width() #2 /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(903): Dompdf\FrameReflower\AbstractFrameReflower->get_min_max_width() #3 /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameReflower/AbstractFrameReflower.php(268): Dompdf\FrameDecorator\AbstractFrameDecorator->get_min_max_width() #4 /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(903): Dompdf\FrameReflower\AbstractFrameReflower->get_min_max_width in /Applications/XAMPP/xamppfiles/htdocs/NTPC/dompdf/src/FrameReflower/TableRow.php on line 72enter code here