Search of collection from home page producing error

I'm getting the error:
Fatal error: Call to undefined function elasticsearch_use_new_ES() in /var/www/html/es_catalogsearch.php on line 97
When I try to search using the search box on my Librarything home page. I'm using Chrome.

>1 Rivendell: Sorry about this, yes, it was caught out in the middle of a code change. I believe the issue is resolved (I'm not seeing more errors since that initial change).

Please let me know if not, though.