When I launch my react app, I receive an alert stating "the request for a dependency is an expression" that is deemed critical.

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This alert could indicate that you are trying to import a dependency using an expression rather than a string. You should revise your code to ensure that your import statements specify the correct string path for your dependencies, as this is necessary for the app to function properly. You can also check for any errors in your dependency management system or version compatibility issues that may be causing the problem.