Magento Product Export Issue 1.9.3.6

Question

I am getting PHP Fatal Error while exporting products to CSV

[01-Jan-2020 10:05:44 UTC] PHP Fatal error: Uncaught exception 'Exception' with message 'File '/home/xyz/public_html/abc/media/catalog/category/' does not exists.' in /home/xyz/public_html/abc/lib/Varien/File/Transfer/Adapter/Http.php:96

Stack trace:

#0 /home/xyz/public_html/abc/get.php(205): Varien_File_Transfer_Adapter_Http->send('/home/customerd...')
#1 /home/xyz/public_html/abc/get.php(165): sendFile('/home/customerd...')
#2 {main}
  thrown in /home/xyz/public_html/abc/lib/Varien/File/Transfer/Adapter/Http.php on line 96
[01-Jan-2020 10:06:44 UTC] PHP Fatal error:  Unsupported operand types in /home/xyz/public_html/abc/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php on line 948

Answer 1

In that line in base code:

$dataRow += $stockItemRows[$productId];

I guess the $dataRow or $stockItemRows[$productId] is an unsupported data type for addition. Eg: array, empty, null...

Try to debug it writing to log the values of $dataRow and $stockItemRows[$productId] data before the addition to see what happens.