Unable to get PnP Context.

[duanepfeiffer]

I get the following error when calling pnpContextFactory.CreateAsync()

{"A configuration issue is preventing authentication - check the error message from the server for details. You can modify the configuration in the application registration portal. See https://aka.ms/msal-net-invalid-client for details. Original exception: AADSTS7000218: The request body must contain the following parameter: 'client_assertion' or 'client_secret'.\r\nTrace ID: e6e05fca-3cb0-41b6-9b07-828133694800\r\nCorrelation ID: 4e9ae87a-5baf-4264-89cc-ece5433e51b2\r\nTimestamp: 2022-03-28 14:17:20Z"}

The aka.ms link in the error says I need to make the app public. I did that but still getting error....
Files.zip