I recently installed a new Blog extension, RSBlog! by RS Joomla. Each blog post has a button allowing printing, PDF creation, and subscribing for all guests. For designated users, I am able to provide additional editing capability after login. A post example is at https://www.certifiedinfosec.com/resources/blog/1-myth-the-board-and-c-suite-have-no-role-in-cybersecurity.

The post's actions available to all public users (guests) from the button's drop-down actions work just fine. However, attempting to use the edit action available from the button drop-down for authorized editors results in a 500 error PHP exception that traces back to Joomshaper Helix Ultimate:

Your site caused a blank screen upon a visit of this URL:

https://www.certifiedinfosec.com/resources/blog?view=form&layout=edit&p_id=10&return=aHR0cHM6Ly93d3cuY2VydGlmaWVkaW5mb3NlYy5jb20vcmVzb3VyY2VzL2Jsb2c=

HTTP_REFERER: https://www.certifiedinfosec.com/resources/blog

Error message data: 500: Call to undefined method Joomla\CMS\Object\CMSObject::getButtonName() in file .../public_html/plugins/system/helixultimate/overrides/layouts/joomla/editors/buttons/button.php:19

LastQuery:

SELECT *, template AS name FROM #__template_styles WHERE client_id = 0

Full PHP error details and login credentials are in Hidden Content. Please advise.