WordPress Updating and Publishing Failed Error

Hi,

When trying to update a page/post in normal edit mode I am unable to do so as it always says failed.

I went to Site Health and this is the error:
Background updates ensure that WordPress can auto-update if a security update is released for the version you are currently using.

(Tick) No version control systems were detected.
(Tick) Your installation of WordPress doesn’t require FTP credentials to perform updates.
(x) Error Some files are not writable by WordPress:
xmlrpc.php
wp-blog-header.php
readme.html
wp-signup.php
index.php
wp-cron.php
wp-config-sample.php
wp-login.php
wp-settings.php
license.txt
wp-mail.php
wp-links-opml.php
wp-load.php
wp-includes/class-wp-user-query.php
wp-includes/l10n.php
wp-includes/date.php
wp-includes/class-wp-oembed.php
wp-includes/images/w-logo-blue-white-bg.png
wp-includes/images/blank.gif
wp-includes/images/down_arrow.gif`

Please could someone help me figure out how to fix the error?

Thanks 🙂

• This topic was modified 4 years, 8 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic