Domain mapping: theme files not found (404)

Hello everyone,

hope you are all fine today.

I'm having an urgent (site needs to be online today) issue with domain mapping: although the mapping works and http://www.domain1.com is loading http://www.domain2.com/subsite, it isn't loading the theme's files like css files, javascript, ...

e.g.:

[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (wp-emoji-release.min.js, line 0)

https://mydomain.com/wp-includes/js/wp-emoji-release.min.js?ver=4.8.1Failed to load resource: the server responded with a status of 404 (Not Found)

I've read and tried a lot of settings and possible solutions, but to no avail.

Can someone please help me out? I granted support access already :wink:

kind regards and thanks,