how to fix fatal error when upgrading new version of theme

Hello,

I got following error when I try to upgrade deasil theme version 2.1o to 3

Error 1.
Fatal error: Cannot redeclare deasil_menu_cart() (previously declared

in /home/egtou/public_html/wp-content/themes/deasil/mega-menu/cart-menu.php:3)

in /home/egtou/public_html/wp-content/plugins/deasil-core/mega-menu/cart-menu.php

on line 104

Hi

For any technical query about theme functionality the best choice will be contact theme Author and let them know How to Contact your purchased theme Author, theme author will be happy to answer your query. Also you can check theme documentation.

Thanks

I have been writing several time but no response from author. Thanks

you can try with posting a comments in theme comments page.

I have posted same in the comments as well as by mail too.