) I need a tip. I've installed a theme via composer and I need to create a child theme having as parent a theme installed via composer.

path of theme installed via composer: vendor/{vendor}/{theme}/ path of child theme: app/design/frontend/{vendor}/{theme}/

in the child theme folder i've created: theme.xml

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


    "name": "{my-vendor-folder}/{my-child-theme}",
    "description": "N/A",
    "require": {
        "php": "~5.5.0|~5.6.0|~7.0.0",
        "magento/framework": "100.0.*"
    "type": "magento2-theme",
    "version": "100.0.2",
    "license": [
    "autoload": {
        "files": [


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* See COPYING.txt for license details.

When I change the theme from the magento backend panel under Content > Design > Configuration and then run: php bin/magento setup:upgrade php bin/magento setup:static-content:deploy

It does not load me the parent theme I have chosen, but the default magento theme.I don't know what I'm wrong. Can someone help me? Thank you ;)

  • Have you found the solution of this problem? Commented Nov 19, 2020 at 17:00

1 Answer 1


I had the same problem. I was using _extend.less in the child theme to add my own styles. But as it turned out the parent theme had an _extend.less extending the blank theme. This approach using a _extend-child.less helped me solve it;


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