Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; guestbook has a deprecated constructor in /home/clients/7371d14d9cd49f1e4264d021502dd1cd/sguggiari.ch/httpdocs/5_guestbook.php on line 17

ERRORE:

Il file guestbook/guests.txt non è presente su disco.
Createlo, anche vuoto, e riavviate lo script