Is the Php code error on e-commerce page part of the theme or cart?

I am getting a code error on the right side of all the e-commerce application pages.

Fatal error: Call to undefined function get_product_search_form() in /home/real/public_html/wp-content/themes/camp/searchform.php on line 9

Can you tell if this is related to the Market Press plugin or the theme… throwing this error.

I am not able to see how to disable the “search” function that it is referring to.

Any clues how to get rid of this entirely would be appreciated