Getting error while running npm start command

Error: Problem validating fields in app.json. See https://docs.expo.io/versions/v25.0.0/guides/configuration.html.
• Field: slug - ‘slug’ should match pattern “^[a-zA-Z0-9-]+$”.

The error is pretty clear: Check the ‘slug’ field in the app.json file and see if it matches that pattern. If you are unsure, paste your app.json here.

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