Facebook invite module not working

Hello,
I have a problem with the facebook invite module, it is not being loaded and I see this error message from facebook:

fb:multi-friend-selector: Required int attribute "max" is not an integer: ""

see here =>> alkemica.net/profilo1/alkemibook
note: you must be registered to the site to see that page, you may login with demo user
user: demo
pass: demo

Regards,
Nic

fb_1580132693 wrote: Hello,
I have a problem with the facebook invite module, it is not being loaded and I see this error message from facebook:

fb:multi-friend-selector: Required int attribute "max" is not an integer: ""

see here =>> alkemica.net/profilo1/alkemibook
note: you must be registered to the site to see that page, you may login with demo user
user: demo
pass: demo

Regards,
Nic

Hello Nic,
we cannot see the problem you mentioned on your website.
was the problem solved?

Mati