When trying to create an order from the admin panel, I get a page without menus/headers:

I tried:
php bin/magento cache:clean
php bin/magento cache:flush
php bin/magento setup:di:compile
php bin/magento indexer:reindex
php bin/magento setup:static-content:deploy -f
that didn't change anything, I also checked the logs, but didn't find anything...
Any help is appreciated, thanks!