Warning on Home Page and Unicon Care will NOT Update

Website: milpitashistoricalsociety.org
Home Page: https/milpitashistoricalsociety.org
Theme: Unicon
Renewed Supoort on Feb 22. 2022
Warning or Error seen on Home page of website
Warning: Trying to access array offset on value of type bool in /home2/milpita1/public_html/wp-content/plugins/unicon-core/inc/shortcodes.php on line 233
Unicon Theme is updated
Unicon Care will NOT UPDATE from Version 1.4 to 1.5
How do I fix it?

Also it is really difficult to find the Forum support ticket in order to use it.

Thank you
Gail Indvik
indvik@sbcglobal.net

Ticket