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I just wanted to point out that the application does work when deployed. Regardless, I'm not sure if it is common to obtain warnings about unsupported elements or if it is typically safe to ignore the errors. Thx.
I get the same error, unfortunately it does not look like this question is going to be answered. I even opened the author's code in visual studio, it had more errors than mine. It doesn't look like the solutions are even tested.