I try to use the Advanced Sessions Plugin, instead of the default nodes. (I rebuilt the plugin from the code, because it was incompatible with 4.14.P1 The problem is, that the client doesn’t find the existing server. (With default nodes it does, but later that won’t be enough for me) Going through …

I don’t officially support 4.14 yet with the plugin. You are jumping the gun upgrading to it, there may have been subsystem changes.