Theme Update

Hello,

We have a website, https://www.cocktailholidays.ro which uses Enfold theme version 4.2.6 as a base for the child theme of the website. Unfortunatly we are not in touch anymore with the development team who developed the website and purchased the theme.
At the moment we can see some errors generated by theme files in Worpress debug log:
[14-Nov-2019 08:53:07 UTC] PHP Notice: Undefined offset: 2 in /home/cocktailholidays/public_html/wp-content/themes/enfold/framework/php/function-set-avia-backend.php on line 434
[14-Nov-2019 08:53:07 UTC] PHP Notice: Undefined offset: 2 in /home/cocktailholidays/public_html/wp-content/themes/enfold/framework/php/function-set-avia-backend.php on line 434

… and loading errors in Firefox Web Developer Tools:
equest URL:https://www.cocktailholidays.ro/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/iconlist/iconlist.js?ver=4b413428acc67c963103ba3fc71f21a1
Request method:GET
Remote address:89.149.59.62:443
Status code:
404

Would you be kind to tell us if a theme purchase and update will fix this issues?

Kind regards,
Stefan Voinescu