Luma theme deconfigured after installing sample data

Question

Console error:

Refused to apply style from 'https://app.bartofilpc.test/media/styles.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

After installing Magento 2 Luma theme, some front-end configuration is missing. Commands I've tried:

• Copying vendorand composer.json from another project
• bin/magento setup:di:compile
• bin/magento sampledata:install and bin/magento setup:upgrade
• Removing sampledata and installing again

Only thing that worked so far was reinstalling Magento.

P.S.: Had to reinstall the Magento store to work, because nothing worked so far (Aug 30, 2022).

Answer 1

I had this issue recently and performed a config change:

• if you have access to the backend, go to Store/Configuration/Advanced/Developer/Static Files Settings and set the Field Sign Static Files to No

• if this is not possible, you can change the file app/etc/env.php and add the following at the end so that it appears like the screenshot below (dev should be a siblings to the node backend for instance)

  'dev' => [ 'static' => [ 'sign' => '0' ] ]

and then run bin/magento set:upg

Answer 2

Please check the .htaccess file is existing in the pub/ and pub/media.