Notice: Trying to get property of non-object in /usr/home/cee.cat/web/agenda.php on line 444 Catchable fatal error: Argument 1 passed to showActivitat() must be an instance of Entrada, null given, called in /usr/home/cee.cat/web/agenda.php on line 484 and defined in /usr/home/cee.cat/web/generic/lib.templates.php on line 23