I installed multisite on Wordpress. I don't have any problems with the panels of either site. But I cannot access the Network Admin panel. When I click on Network Manager, it gives a link like below.
https://https//www.maxray.com.tr/wp-admin/network/
I'm guessing you have an extra https// in your site configuration somewhere.
If you look in wp-config.php you should have
define( 'MULTISITE', true );
define( 'DOMAIN_CURRENT_SITE', 'www.maxray.com.tr' );
define( 'PATH_CURRENT_SITE', '/' );
and in the database table wp_site you should have
| id | domain | path |
|---|---|---|
| 1 | www.maxray.com.tr |
/ |
In particular neither copy of your domain here should be https://www.maxray.com.tr/ - no https:// and no trailing /, just www.maxray.com.tr.
If it's not that, then you probably have a bad filter somewhere (e.g. network_site_url) that's trying to prefix your domain with https// (without the colon). I'd search your mu-plugins folder for that.
