If you 're are running a load-balanced dashboard and if the nodes appear out of sync, for example when you make a change in a chart and someone else can't see that change, the following suggestions may help you fix the problem:
Restart the nodes
Exec into each node and call the delete cache endpoint
If there 's is a route to the interface for each individual node, log in on each node and click the top-right vertical ellipsis, then click Clear Cache Data
...