The extension seem to create a warning to my site at https://fossumanlegg.no

ERROR: Warning: Undefined property: Joomla\CMS\Menu\AdministratorMenuItem::$element in /home/4/f/fossumanlegg/www/plugins/system/rsformdeletesubmissions/rsformdeletesubmissions.php on line 86

Note that I updated to PB v6 yesterday.

When I check this issue with the developer of RS Forms, this is their reply:

This is caused by the following plugin: System - SP PageBuilder

Once disabled the message no longer shows. The plugin injects an invalid menu item in the backend, here's how it looks:

Array ( [id] => custom-reports [menutype] => [title] => Comments [alias] => [note] => [route] => [link] => index.php?option=com_sppagebuilder&view=comments [type] => [level] => [language] => [browserNav] => [access] => 1 [home] => [img] => [template_style_id] => [component_id] => [parent_id] => [component] => [tree] => Array ( )

[query] => Array ( )

[target] => [icon] => fas fa-comment [iconImage] => [class] => menu-item-icon icon-comment )

Notice that it's missing the "element" property, something all menu items have. Please contact the developers of this extension for a fix.