When encountering 403 errors from admin/config while trying to build a staging system in Drupal, there are several potential causes. One common issue is related to permissions and access settings. It's important to ensure that the user roles and permissions are correctly configured to access the admin/config area.
Additionally, issues with clean URLs, server configurations, and file permissions can also lead to 403 errors. You may need to check the server logs and Drupal error logs for more specific information on the cause of the 403 errors of kmfusa.
If the issue persists, you may want to refer to community discussions and support forums for troubleshooting steps and potential solutions.
