Emerson Maningo

Site registration is a feature that’s already built-in inside multisite core. It needs to be enabled, you can checkout this tutorial by WPMU: https://premium.wpmudev.org/blog/wordpress-multisite-masterclass-user-site-registration/

Through site registration, you give an option to your user to create a site when they register. I’m not sure there is a plugin to handle this that provides greater flexibility and customization. I didn’t find any in the plugin repo.

The lines you added on the wp-config.php can be removed, its meant for testing only and should not cause other issues.

Sorry I don’t have anymore ideas on fixing this, maybe other volunteers here will jump in.

Is this parent theme? If it is hard-coded in the parent theme template, then it might be a bug inside the theme. Did you try contacting the theme author? You should inform the theme author on this. There is a hard coded code inside the theme that broke links in the site.

If you are not using a child theme, you can try to create a child theme: https://developer.ww.wp.xz.cn/themes/advanced-topics/child-themes/ to see if you can override the problematic theme template with a fixed template of yours.

Child theme is a recommended solution to customize parent theme or to change something with the parent theme template. You can control this and the changes won’t be overridden by theme updates.

Other things I suspect is that you might have wrong site URL in the database. This can result to 404 errors. What I would suggest is to add this to wp-config.php for testing purposes to see if fixes your 404 errors:

define( 'WP_SITEURL', 'http://replacewithyourdomain.tld' );
define( 'WP_HOME', 'http://replacewithyourdomain.tld' );

Replace replacewithyourdomain.tld with the domain you are testing.
If its already added in wp-config.php but incorrect, please revise it and test again.

If that still don’t work, I would suggest keeping in touch with your theme author for this issue.

Check if you have activated any caching plugin and deactivate it first. Clear your browser history and re-test.

If you see the updated web in your own computer, you could be hard coding the IP address of the site. And you are editing the latest site. But the entire web does not yet know about your new site. Have you configured your site name server correctly? Is it pointing to the correct IP address?

Try pinging your site in other computers, does it return the same IP address in any computers?

Other things to look at is when you have a cache folder or cache plugin files in your wp-content directory. Backup your site first and then try deleting these files.

And check your wp-config, that you don’t have any line in there that defines cache to true.

This could be a bug inside Elementor. It’s because the plugin function sanitize_settings is expecting array as the data type for the first argument. But exactly happens is that its possible a string could be given.

To fix this, is to inform the Elementor developer regarding this issue and provide some steps to reproduce.

If the site transfers to new hosting, it requires changes to DNS to point to the new hosts. Assuming this is already done, the problems you are seeing is might be due to DNS propagation It’s not yet completely resolving to your new hosts. It could by the installer.php file is not being located. Give it a few hours or at least a day to completely propagate.

You can check the progress by doing a ping to the website. Check the IP address that is being returned by the ping command if its still the old host or the new host. With this you will know if there is something wrong with the domain DNS configuration.

If you are sure that the IP address of the site is now pointing to the new hosts, then re-run the duplicator script and see how it goes.

Take a look at documentation for taxonomy parameters in WP_Query:

https://developer.ww.wp.xz.cn/reference/classes/wp_query/#taxonomy-parameters

For example displaying posts from several taxonomies:

$args = array(
    'post_type' => 'post',
    'tax_query' => array(
        'relation' => 'AND',
        array(
            'taxonomy' => 'movie_genre',
            'field'    => 'slug',
            'terms'    => array( 'action', 'comedy' ),
        ),
        array(
            'taxonomy' => 'actor',
            'field'    => 'term_id',
            'terms'    => array( 103, 115, 206 ),
            'operator' => 'NOT IN',
        ),
    ),
);
$query = new WP_Query( $args );

Looking at your code example, it does not seem to use tax_query parameter.