What does the error message "Eloquent error: A facade root has not been set" mean in different words?

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The error message is indicating that a fundamental configuration required by Eloquent, the database ORM (object-relational mapper) in Laravel, has not been properly set up. Specifically, the "facade root" has not been established, which is essentially a reference to the underlying system that Eloquent is relying on to function properly. This could be due to a variety of factors, such as missing or incorrect configuration settings, compatibility issues with the database management system being used, or other technical errors that are preventing Eloquent from connecting to the necessary resources.