@KelseyLewis I just tried that quickly and I got the same error message before granting access to the datasource I just created. It’s important to grant the datasource to one of the permission sets.

Did you try to Preview data from the Datasource? Just to make sure you’re getting data in your datasource. Then you need to add the datasource to one of the permission sets that your user has.

Then I get results in the Lobby Element:

@KelseyLewis just to add on this. It’s also worth it to open the debugger to exactly what the error is. The error displayed on the toast message is a bit missleading, but in the debugger you can always find the exact error message. It’s much easier to understand what’s missing from reading the Response in the debugger.