Fatal error: Uncaught Error: Call to a member function renderTag() on null in /home/esecureh/public_html/magdemo/vendor/magento/module-variable/view/adminhtml/templates/system/variable/js.phtml:37 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-variable/view/adminhtml/templates/system/variable/js.phtml on line 37