Hello @stefan,
Sorry for the late reply. As mentioned, with the removal of the old sunstone some functionalities has been removed. Looks like this is one of them.
I will check with the team if they are planning to reinstate it (like mentioned on the other post), but the option to access the logs for VM’s can be done through the file
/var/log/one/<VM_ID>.log
I know it might be not so simple as it used to be, but at least is an option.
Cheers,