What does the ESLint error message "Unable to resolve path to module 'firebase-admin/app'" mean?

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The ESLint error message "Unable to resolve path to module 'firebase-admin/app'" means that the path specified in the import statement for the 'firebase-admin/app' module cannot be resolved. This could be due to an incorrect or misspelled path, a missing or incorrectly installed module, or a problem with the module resolution configuration in the project's settings.