fatal error

I don't find the solution..

I see this difference:
the url is:

www.mysite.com/camere.html?id=&checkin=2...511d9ddc99fcc61d12=1


.html?id=&checkin if I put 8 (is the number of the room in solidres), the link work, bu I put 8 in the module mask and don't work..

thanks a lot!
I solved