CORS problem ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH

[JeremyGreaux]

Hi, I use adonis-apollo-server(^1.0.2) extension to create my own graphQL api. Query request works fine, but when I use Mutation query, I have got this request error:

POST http://localhost:3333/graphql net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH ApolloError.js:34 Uncaught (in promise) Error: Network error: Failed to fetch at new ApolloError (ApolloError.js:34) at Object.error (QueryManager.js:122) at SubscriptionObserver.error (zen-observable.js:174) at httpLink.js:147 at

I tryed to change cors configs, but no changes. With another graphQL API (express), I have not this error.

Thx for helping

[ammezie]

Hey,

I use both queries and mutation without any errors. Do you mind sharing how to reproduce this error so I can take a closer look at it?

[JeremyGreaux]

Hi,

With graphiQL it's work well, but in my react APP, it's not working.

My schema is :

  type Mutation {
    login (email: String!, password: String!): String
    createUser (username: String!, email: String!, password: String!): User
  }

In my resolver :

...
  Mutation: {
    async login(_, { email, password }, { auth }) {
      const { token } = await auth.attempt(email, password)
      return token
    },
...

My server running on 127.0.0..1:3333/graphql and my react APP on 127.0.0.1:3000

[ammezie]

You will have to enable CORS on the GraphQL server. Set origin to true in config/cors.js.

[JeremyGreaux]

Hi have recreate demo project if you want reproduce my bug : https://github.com/JeremyGreaux/adonis-graphql-test https://github.com/JeremyGreaux/react-graphql-test

my origin is set to true

[ammezie]

Hey,

I just tried my own graphql server with a Vue app using Apollo client. Everything works fine both queries and mutations. All I had to do was enable CORS.

I will take a look at your code but I'm not that confident with React.

[JeremyGreaux]

Humm I tryed with express and express-apollo-server and it's worked.

[pikitgb]

Having same issue here. The queries work fine but mutations are failing. The mutation actually works when i run it in:

http://host:port/graphiql

But the POST method seems to be is failing from the apollo client in the React Component .

I'm using Adonis4 my origin is in true in the cors.js file.

Route.route('/graphql', ({ request, response }) => { return ApolloServer.graphql({ schema }, request, response) }, ['GET', 'POST'])

best regards.

[pikitgb]

Uhmm weird, ok I think i see what's causing this, @JeremyGreaux maybe this helps you.

I have this mutation that create notes: const NOTE_MUTATION = gqlmutation note($title: String, $note: String, user_id: Int) { note(title: $title, note: $note, user_id: Int) { id } } export default graphql(NOTE_MUTATION, { name: 'note' })(Notes);

But in my Mutation (schema) definition i have this, (schemas.js) note(title: String, note: String): Note (Check here that the user_id is not included in the Schema definition for the mutation... )

Once i changed my React code and removed my user_id the code started working again.

const NOTE_MUTATION = gqlmutation note($title: String, $note: String) { note(title: $title, note: $note) { id } } export default graphql(NOTE_MUTATION, { name: 'note' })(Notes);

Best regards.