Cannot add Packages in Sentastico

[italiango]

I have this error with all packages, i'll try this morning to deactivate AdBlocker plugin on Chrome and to accept all Inbound Traffic protocol in aws, but nothing the same error.
Sometimes the click on the button doesn't make error, but i can't see the the package in Remove or Sentastico tab.
I try to reboot the server too and send "zppy upgrade sentastico" too.