Error on image upload

I have a wordpress working with four domains.

I can’t upload images on the main domain, it is working on other 3.

This is the error I get on the console:
XMLHttpRequest cannot load http://www.xxx.com/wp-admin/async-upload.php. The request was redirected to ‘http://www.xxx.org/wp-login.php?redirect_to=http%3A%2F%2Fwww.xxx.org%2Fwp-admin%2Fasync-upload.php&reauth=1’, which is disallowed for cross-origin requests that require preflight.

Thanks,

https://ww.wp.xz.cn/plugins/wordpress-mu-domain-mapping/