We are running vision at a client and they would like to make some trending with easy chart.
We made a tree view of all tags where the client can drag and drop the wanted tag.
After we "save and publish" a new version these changes are gone and the client has to make his trend again.
He wants to save the configuration of the easy charts.
The key is that a "configured" EasyChart has several dataset properties containing that configuration. You likely have some binding on the EasyChart that is initializing those properties with your original configuration. You will need to modify the bindings to not do that, but instead load the last setup. (And provide a way for the user to signal that they want to save the setup.) Such a setup typically uses the database to hold the configurations, keyed to user name.
I'm kind of guessing you're missing some data the module expects. Maybe a name ?
But without more information about the error, there's not much we can do to help.
Or, it's a compatibility issue. The module's page clearly says 7.9.18, and you're running 8.0.16. That's a big leap.
By the way, you probably shouldn't be running 8.0 anyway.
V8.0.17 was the last version if I remember correctly, and your 1 version behind that, on top of that 8.1 is now at 8.1.24. That means you're 26 releases behind. That's a whole host of features and bug fixes that you don't have access to.