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Network error: Unexpected token < in JSON at position 0 at new ApolloError

发布于 2018-11-08 14:18:46

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const httpLink = createHttpLink({
  uri: 'http://localhost:3090/'
})

const client = new ApolloClient({
  link: httpLink,
  cache: new InMemoryCache()
})

client.query({
  query: gql`
    query users {
        email
    }
  `,
})
  .then(data => console.log(data))
  .catch(error => console.error(error));

This query gives an error when fetching from client-side code but when i execute this query in browser on http://localhost:3090/graphql it fetches data correctly

Questioner
Mukesh Kumar
Viewed
0
trixn 2018-11-08 22:51:19

The graphql endpoint you are posting your queries to is missing the /graphql. So your server probably returns an html document containing the 404 error message that starts with < from <html.... Apollo tries to parse that as the query result and fails to do so.

Check that httpLink is actually localhost:3090/graphql.

Also the syntax of a query is either:

{
    users {
        email
    }
}

or if you want to name the query:

query Users {
    users {
        email
    }
}