Do you get the Fatal error: Only variables can be passed by reference in vendor/magento/module-backend/view/adminhtml/templates/system/search.phtml error in your Magento 2 store when calling the backend? To fix that issue, simply deactivate asp_tags in your php.ini. After that, the Magento 2 backend will be available again.
Fatal error: Only variables can be passed by reference in search.phtml
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