works (use search term “ring”)
if you type ring it will auto show results
If you press enter on the keyboard it takes you to woo search results and everything works correctly
Breaks (use search term “bob”)
if you type bob it will auto show no results but not break
if you press returns it takes you the the results page that should be the woo results but now the page breaks
further testing finds that there is an issue with Premium Addons for Elementor (we have the pro version but it breaks with just the free version too). If we disable this plugin the no results page works correct but we have many elementor elements from this plugin all over the site.
I tried to log-in to test, but the login details are not working (user not found).
The plugin does not change the layout/behaviour of the results page, it should not cause any problems. To test, I suggest disabling the plugin temporarily and checking if the results page changes in any ways. If all goes well you should get the same output (layout) even if the plugin is inactive.