magento - Fatal error: Call to a member function toHtml() on a non-object in app\code\core\Mage\Adminhtml\Block\System\Convert\Gui\Edit\Tabs.php on line 69
magento - Fatal error: Call to a member function toHtml() on a non-object in app\code\core\Mage\Adminhtml\Block\System\Convert\Gui\Edit\Tabs.php on line 69 Solution check the integrity of this file app\code\core\Mage\Adminhtml\Block\Catalog\Product\Helper\Form\Gallery.php and all the other files that can be missing Download a fresh copy of your own version of magento and replace eventual missing/corrupted files.