i migrate my server few weeks ago, and now i can't upload any simple csv file, when i click on check data the loading icon appears but nothing else. on "system.log" i have this issue:
2017-03-19T16:26:24+00:00 ERR (3): Notice: Undefined index: _root_category in /home/kilimcar/public_html/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php on line 654
the line referred:
$category = $emptyRootCategory ? null : $this->_categoriesWithRoots[$rowData[self::COL_ROOT_CATEGORY]];
I'm on magento 22.214.171.124 i hope someone have a solution, thank you in advance.
Open browser's developer console before you click on Check Data.