rendering a router inside router?

[galpodlipnik1]

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Error: You cannot render a <Router> inside another <Router>. You should never have more than one in your app. Fix?

[imPrathamDev]

In this tutorial he uses the previous version of react-router-dom so have two options first one is to use the previous version or google (you can also check youtube) version 6 react-router-dom changes.