Fatal error: Uncaught Error: Call to a member function fetch_row() on bool in /var/www/html/lib/biblio_list_model.inc.php:113 Stack trace: #0 /var/www/html/template/acua/biblio_list_template.php(111): biblio_list_model::getAuthors(Object(mysqli), '250612', true) #1 /var/www/html/lib/biblio_list_model.inc.php(200): biblio_list_format(Object(mysqli), Array, 1, Array, NULL) #2 /var/www/html/lib/biblio_list_model.inc.php(169): biblio_list_model->makeOutput() #3 /var/www/html/lib/contents/default.inc.php(182): biblio_list_model->getDocumentList() #4 /var/www/html/index.php(144): include('/var/www/html/l...') #5 {main} thrown in /var/www/html/lib/biblio_list_model.inc.php on line 113