Error while signing in: Browser required. Use acquireTokenInteractively instead.

Question

I’m attempting to use native authentication with a user flow (email + password) in my application.

I believe I’ve configured all the necessary settings correctly, including enabling native authentication and mobile/desktop flows.
I am actually using a sample from Azure Samples: https://github.com/Azure-Samples/ms-identity-ciam-native-auth-ios-sample?tab=readme-ov-file

However, when I try to sign in, I receive the following error:

"Error while signing in: Browser required. Use acquireTokenInteractively instead."

I'm looking for guidance on why this might be occurring and how to resolve it.