Query Plan Tab missing with 'graphql-playground-middleware-express' playground

I am using Apollo Federation Server, as I need to run it using specific context path,

http://localhost:8080/graphql/ui

I am able to achieve this using “apollo-server-express” and “graphql-playground-middleware-express” and “express”.

I am using plugin > ApolloServerPluginLandingPageGraphQLPlayground

All runs fine but “Query Plan” tab does not show up.

The query plan tab was a custom extension of the GraphQL playground. To get the best integration with federation and viewing the query plan, we recommend you checkout the new Apollo Sandbox: