I have followed the dev docs on 2.2 to create an admin theme.


When I run php bin/magento setup:upgrade I receive the following error, but I even checked my module against the admin theme dev docs again.

Module 'Magento_Theme':

Running data recurring...Field title can't be empty

my app/design/Snow/wonderland/theme.xml file

<theme xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Config/etc/theme.xsd">
    <title>Wonderland</title> <!-- your theme's name -->
    <parent>Magento/backend</parent> <!-- the parent theme. Example: Magento/backend -->

my registration.php file

    'adminhtml/Snow/wonderland', // Example: 'adminhtml/Magento/backend'

my /etc/adminhtml/di.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">

    <!-- Admin theme. Start -->
    <type name="Magento\Theme\Model\View\Design">
            <argument name="themes" xsi:type="array">
                <item name="adminhtml" xsi:type="string">Snow/wonderland</item> <!-- Example: "Magento/backend" -->
    <!-- Admin theme. End -->

My /etc/module.xml

<module name="Snow_wonderland" setup_version="2.0.1"> <!-- Example: "Magento_Backend -->"
        <module name="Magento_Theme"/>
  • but those files (/etc/adminhtml/di.xml and /etc/module.xml) are from module not from theme. They should be in app/code/Vendor/Module. Also maybe <?xml version="1.0"?> is missing in yours xml files?
    – krybbio
    Mar 9, 2018 at 14:59

1 Answer 1


You forgot to add a title value in the theme.xml file.

<theme xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Config/etc/theme.xsd">
    <title>[VALUE HERE]</title>


Make sure you have your theme under app/design/adminhtml/Vendor/Theme. A link a about backend themes here.

  • Updating original post to show what I had.
    – camdixon
    Mar 9, 2018 at 14:21
  • I have the title there, and it still gave error. However, did I do something wrong here or should I specify package?
    – camdixon
    Mar 9, 2018 at 14:22
  • do you have the correct folder structure? like app/design/adminhtml/Company/Theme?
    – Adrian Z.
    Mar 9, 2018 at 14:26
  • Yes, I do. app/design/adminhtml/Snow/wonderland
    – camdixon
    Mar 9, 2018 at 14:30
  • Do you use linux? Maybe the folder name and the registration name are not the same case.
    – Adrian Z.
    Mar 9, 2018 at 14:32

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