Unable to connect vCenter 6.5

Grafana Installation
1

I installed Grafana. Successfully connected vCenter 6.0 & 6.7
But we can’t connect to 6.5

2

I installed Grafana. Successfully connected vCenter 6.0 & 6.7

What does that mean? Grafana visualises data from a data store. vCenter is
not a data store; it’s a virtualisation management system.

How / why would you connect these two together?

But we can’t connect to 6.5

What happens when you try?

Antony.