Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in /home/refristo/web/refristore.com/public_html/modelo/db/db.php:159 Stack trace: #0 /home/refristo/web/refristore.com/public_html/modelo/modelo.php(179): db->mostrar_php() #1 /home/refristo/web/refristore.com/public_html/vista/pagina/producto.php(60): modelo->mostrar() #2 {main} thrown in /home/refristo/web/refristore.com/public_html/modelo/db/db.php on line 159