Hi I am following this video to make a booking system

CodePudding user response：

To fix the error TypeError: graphqlHttp is not a function, replace

const graphqlHttp = require('express-graphql');

with

const { graphqlHTTP } = require('express-graphql');

(Notice the different case for HTTP, versus Http)

Of course, in the other lines, graphqlHttp must be replaced by graphqlHTTP.

https://graphql.org/graphql-js/express-graphql/