InfluxDb and Grafana Installation fail on Odroid c2

Yep, tried to install both programs via Dietpi optimized software installation process. Sadly, major fail. Error thrown reads like this: Failed to fetch Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?).

Unsure what to do to fix at this point. Only InfluxDB shows as installed but any apt-get update displays the above failed to fetch message also. Any informed thoughts about a workable solution to install Grafana would be welcomed!

Also, naively wondering why Grafana is not sourced from here in the first place? -