Module XML data not available

Hello,
on my site ( www.diocesi.parma.it/parrocchie/sorbolo/ ), where I have the Hot Startup template installed, I have a problem (since today or maybe a few days ago) with most of the site's Hot modules (for example Hot maps, Hot swipe carousel, and so on...): they are not working on the site and, when I try to enter into the module settings, I get: Module XML data not available (see screenshot attached). 
 
Can you help me finding out what the problem is? What can I do to recover them?
Thank you, best regards,
Francesca

Hello,

The problem is probably not related to our modules. It's related to your Joomla installation or hosting. Please try to edit other modules.

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Regards,
Milos