Fatal error: Uncaught exception 'SolrClientException' with message 'Solr HTTP Error 6: 'Couldn't resolve host name' ' in /var/www/html/lib/Api/Photo/Collection.php:235 Stack trace: #0 /var/www/html/lib/Api/Photo/Collection.php(235): SolrClient->query(Object(SolrQuery)) #1 /var/www/html/lib/Gallery/Images.php(1652): Api_Photo_Collection->searchByTags(Array) #2 /var/www/html/controllers/photos.php(44): Gallery_Images->solrSearchKeywords(Array) #3 /var/www/html/init.php(61): require_once('/var/www/html/c...') #4 /var/www/html/index.php(24): require_once('/var/www/html/i...') #5 {main} thrown in /var/www/html/lib/Api/Photo/Collection.php on line 235