Fatal error: Uncaught TypeError: Argument 4 passed to Magento\Theme\Block\Html\Topmenu::_getHtml() must be of the type array, null given, called in /home/thecovetedluxury/public_html/app/code/Megnor/Category/Block/Html/Topmega.php on line 179 and defined in /home/thecovetedluxury/public_html/vendor/magento/module-theme/Block/Html/Topmenu.php:211 Stack trace: #0 /home/thecovetedluxury/public_html/app/code/Megnor/Category/Block/Html/Topmega.php(179): Magento\Theme\Block\Html\Topmenu->_getHtml(Object(Magento\Framework\Data\Tree\Node), 'submenu', 0, NULL) #1 /home/thecovetedluxury/public_html/app/code/Megnor/Category/Block/Html/Topmega.php(306): Megnor\Category\Block\Html\Topmega->_addSubMenu2(Object(Magento\Framework\Data\Tree\Node), 0, 'submenu', 0) #2 /home/thecovetedluxury/public_html/app/code/Megnor/Category/Block/Html/Topmega.php(363): Megnor\Category\Block\Html\Topmega->_getHtml2(Object(Magento\Framework\Data\Tree\Node), 'submenu', 0) #3 /home/thecovetedluxury/public_html/vendor/magento/framework/Interception/Intercept in /home/thecovetedluxury/public_html/vendor/magento/module-theme/Block/Html/Topmenu.php on line 211