Refinement of the store and other foreign sites and their support php, sql

I am looking for a php-developer to fix some errors of the electronic store on WP (there is a log file) and, as well as solve the problem with the scrolling error, when you click on the menu, it happens that the scroll to the desired block does not work.

The Page scroll to id scroll plugin is already configured and tied to the menu. It remains to deal with the error.