I did upgrade Magento from 2.1.4 to 2.2.2
I am getting issue while editing the product in back end.
1 exception(s): Exception #0 (Exception): Warning: Illegal offset type in isset or empty in /vendor/magento/module-ui/Config/Reader/Definition/Data.php on line 126
Exception #0 (Exception): Warning: Illegal offset type in isset or empty in /vendor/magento/module-ui/Config/Reader/Definition/Data.php on line 126 /vendor/magento/module-ui/Config/Reader/Definition/Data.php(126): Magento\Framework\App\ErrorHandler->handler(2, 'Illegal offset ...', '/var/www/html/u...', 126, Array) /vendor/magento/framework/View/Element/UiComponentFactory.php(382): Magento\Ui\Config\Reader\Definition\Data->get(Array) /vendor/magento/framework/View/Element/UiComponentFactory.php(396): Magento\Framework\View\Element\UiComponentFactory->mergeMetadataItem(Array, Array, false) /vendor/magento/framework/View/Element/UiComponentFactory.php(396): Magento\Framework\View\Element\UiComponentFactory->mergeMetadataItem(Array, Array, false) /vendor/magento/framework/View/Element/UiComponentFactory.php(396): Magento\Framework\View\Element\UiComponentFactory->mergeMetadataItem(Array, Array, false) /vendor/magento/framework/View/Element/UiComponentFactory.php(305): Magento\Framework\View\Element\UiComponentFactory->mergeMetadataItem(Array, .......... ..........