ZC 1.5.6c
PHP 7.3

After posting another thread titled "Hundreds of Thousands of MYdebug logs" I realized afterwards that the PHP warning in those errors is pertinent.

This is the error: "PHP Warning: Use of undefined constant SEARCH_DEFAULT_TEXT - assumed 'SEARCH_DEFAULT_TEXT' (this will throw an Error in a future version of PHP) in /usr/www/users/xxxxxx/store/includes/templates/template_default/sideboxes/tpl_search.php on line 17."

The site was upgraded to ZC 1.5.6c from ZC 1.5.4 I believe. My client hired someone else to do the upgrade because I was not comfortable doing the upgrade for her. I did however upgrade the PHP version to 7.3 for compatibility issues she was having with her version of WordPress and related plugins.

I'm not sure how to proceed here but am hoping this is a minor issue to fix.