ACI Sandbox Tshoot error

[artiko]

Hi All,

i'm trying to explore the API/APIC solution using the public sandbox of devnet (https://sandboxapicdc.cisco.com/) that is wonderful!

But i'm expirencing troubles when i try to setup a session in Admin->Visibility&Troubleshooting; i've created a session with two endpoint apply wiht submit but the page is partially loaded with this error. Am I making any mistakes or is it a sandbox problem?

Thanks

Fabio