Hello,
I’m having an issue when trying to extract measurement data from the HTMLCtrl panel object. I have 2 different data sources: SQL Server and OPC UA. Normally, if I query each data source on its own, I can read the data from ctrl.data array. But it isn’t working with Mixed data sources.
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What Grafana version and what operating system are you using?
v9.0.2 - Windows Server 2019 -
What are you trying to achieve?
Getting data from the ctrl object for my custom HTML dashboard. -
How are you trying to achieve it?
I have queries from 2 data sources: SQL Server and OPC UA.
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What happened?
There’s an error in the HTMLCtrl object: “Cannot read properties of undefined (reading ‘length’)”
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What did you expect to happen?
Data should be embedded in the ctrl object. -
Can you copy/paste the configuration(s) that you are having problems with?
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Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
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Did you follow any online instructions? If so, what is the URL?
Can’t seem to find any similar issues.