Load site data error

First, please make sure that you setup explore page and connect app to your site. Read more details at: https://docs.cththemes.org/docs/cthdirectory-apps/installation/install-plugin-and-setup-app/

Did not work?

Try disable authentication

Edit your .htaccess file to add the code bellow

RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]

Or

RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1

And please make sure that you are using https on your site.