First of all try to clear you cache I think and if this does not work, try to make chmod 700 on your var folder.


You can do it by creating a custom module. Create below required files for the module under below path: app/code/Vendor/Module/registration.php app/code/Vendor/Module/etc/module.xml Create di.xml file under app/code/Vendor/Module/etc/adminhtml with below content. <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ...


You can try this: Create file customer_form.xml in Vendor/Module/view/adminhtml/ui_component <?xml version="1.0" encoding="UTF-8"?> <form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd"> <fieldset name="customer"> <fieldset name="test"...

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