Brief We have updated the file 'admin_export.php' for version 3.6. Description When selecting a Product name in sales orders exporting feature and generate a csv file you may receive notices in csv file. Solution We would recommend you to download an updated version of the file from the below link. Further, extract the above mentioned file into the 'admin' folder of your shop. Do not forget to make a backup copy of the current file in case something goes wrong.