Upgrade error Advanced Search

Attempting to Upgrade Advanced Search by clicking on “Upgrade” to 3.4.20 I get the following error: Omeka\Mvc\Exception\PermissionDeniedException in /home/st7030/domains/st7030.ispot.cc/public_html/omekas/application/src/Controller/Admin/ModuleController.php:244

Any help fixing this would be welcome. Thanks!
Here are the details:

Hmm… and I assume you’ve tried refreshing the Modules page and trying again?

The “Forbidden” error here really only relates to a pretty limited situation where a security token is missing or expired… that kind of problem can happen if you’ve left a page open for a long time and tried to perform an action, but then retrying should succeed.

Thanks! Problem resolved.