I update my magento webstore to 2.2.6 using following guide: https://devdocs.magento.com/guides/v2.0/comp-mgr/cli/cli-upgrade.html
Not everything seems to be fine. I have some css files that do not get generated (calendar.css for example). When I try to view the source of these files in the browser I get following error:
annot create a symlink for "C:/xampp/htdocs/magitas/lib/web/mage/calendar.css" and place it to "C:/xampp/htdocs/magitas/pub/static/frontend/Magento/luma/nl_NL/mage/calendar.css" Warning!symlink(): Cannot create symlink, error code(1314)
I tried changing the theme from my own theme to magento/luma but I got the same message.
I also tried the
php bin/magento setup:static-content:deploy -f command but with the same result.