Fatal error: Uncaught mysqli_sql_exception: Operand should contain 1 column(s) in /home/u361673192/domains/ceris.pt/public_html/backoffice/model/Database.class.php:143 Stack trace: #0 /home/u361673192/domains/ceris.pt/public_html/backoffice/model/Database.class.php(143): mysqli_query() #1 /home/u361673192/domains/ceris.pt/public_html/backoffice/modules/publications/model/Publication.class.php(927): DataBase->QUERY_SELECT() #2 /home/u361673192/domains/ceris.pt/public_html/backoffice/modules/employee/controllers/EmployeeDetailModalController.php(22): Publication->get_bo_publication_colaborador_phd_link() #3 /home/u361673192/domains/ceris.pt/public_html/backoffice/frontController.php(147): include('/home/u36167319...') #4 /home/u361673192/domains/ceris.pt/public_html/backoffice/index.php(8): include('/home/u36167319...') #5 {main} thrown in /home/u361673192/domains/ceris.pt/public_html/backoffice/model/Database.class.php on line 143