multisite: Blocked by Content Security Policy instead of Preview as admin

that link is about wordpress 5.0 ( current version WordPress 5.3 ) after clicking preview can you manually replace the domain to the SITEURL domain? maybe it’s a javascript error.
Example secondary site ( for id 2 ) all settings, not modify please.
https://yourdomain.org/my_directory/wp-admin/network/site-settings.php?id=2 ( network )

That just took me to the main multisite admin page:

https://www.ed65love.com/wp-admin/network/

i.e. it didn’t help. Or am I missing something?

Surely there are other multisite users who’ve run into this?!

that page is in sites, after clicking edit and site settings, obviously you have to replace your id with the one you use for the site with the problem, please go to that link and report the home and siteurl.

this is the function used for the preview https://developer.www.ads-software.com/reference/classes/wp_customize_manager/get_return_url/ ( it’s use home ) and this for settings new url https://developer.www.ads-software.com/reference/classes/wp_customize_manager/set_preview_url/ ( it’s use home ).
If your siteurl is different from home your error appears.