Worpress problem

hI, I have had wordpress installed for me and it looks like the front end of WP Bakery Page Builder isn't working in (Portfolio Gallery — Front Page) but works on other pages. I found the following instructions in the [login to view URL] as you suggested but do not know where to find the php file. Please note that the Frontend view for Visual Composer has been intentionally disabled since some of the added custom shortcodes require page reload because of script calculations, and due to this do not appear on the page while building with the Frontend view. The Frontend view can be used. However, while building your page some elements might not display properly until you refresh the page. If you would like to use the Frontend view, you can enable it by navigating to wp-content/themes/ambient/framework/modules/visualcomposer/[login to view URL] and in that file finding the following piece of code: if(function_exists('vc_disable_frontend')){vc_disable_frontend();} and either removing or commenting it out. To disable the Frontend view again you just need to uncomment or return this code. I am not skilled to fix this, I need some help.