Problem on Front Page

Hi everyone,

first of all so sorry if it is not the appropriate place to ask for help, I did not know where else to go.

I have installed a theme called triply and it used to work just fine until a few weeks ago there was a problem, there is this line of code appearing everywhere on the front page:

Deprecated: Function Elementor\Widgets_Manager::register_widget_type is?deprecated?since version 3.5.0! Use register instead. in?/home3/capitol1/public_html/wp-includes/functions.php?on line?5383

I’ve tried installing and uninstalling some plugins and other ways as well but did not achieve anything. I did not really use this website so carelessly I did not mind this problem for sometimes but now I want to keep updating this page and was wondering is there anyway that anyone can help me with this please? Thanks.

Kind regards

Vahid Rahmanain

The page I need help with: [log in to see the link]