Questo è il link della mia prova gallery:http://www.idro-solar.it/piwigo

Qunado apro la mia "prima-gallery" e clicco su un'immagine mi compare una messaggio di errore che vedo anche durante la preparazione.
Questo è il messaggio:
Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in D:\webroot\cannataga\idro-solar.it\wwwroot\piwigo\include\functions.inc.php on line 520 Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in D:\webroot\cannataga\idro-solar.it\wwwroot\piwigo\include\functions.inc.php on line 520 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in D:\webroot\cannataga\idro-solar.it\wwwroot\piwigo\include\functions.inc.php on line 520 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in D:\webroot\cannataga\idro-solar.it\wwwroot\piwigo\include\functions.inc.php on line 520.
Aspettando risposta vi saluto tutti:)