I’ve developed a Copilot app for my PO mail follow-up system. The PO follow-up is built using a SharePoint list and Power Automate. I also have a summary list that I sync to Dataverse to use as the data source for the Copilot control.
The problem is this: the app was created in a Developer environment. When I run it in test mode, everything works fine. However, after I publish the app, the Copilot control stops working and shows the error: “Error loading control.” (Again, this is all within the Developer environment.)
I want to use and test this app in the Developer environment without running into the Copilot control rendering issue.
How can I fix this Copilot control rendering problem in the Developer environment? Has anyone else faced the same issue?

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