Thunderhub | UnableToConnectToThisNode

Hey Guys,

since a few days (maybe last Umbel update?) I get this error message when I try to open Thunderhub. Does anyone have the same problem? Any solutions or hints are greatly appreciated.

I updated to thunderhub v0.13.19 last night. I am using ubuntu and updating via the command line, but I also now receive this error when trying to log in to thunderhub.