我正在使用@graphql-codegen/cli工具从我的graphql服务器生成typescript类型，下面是我的codegen.yml内容：

overwrite: true
schema: "http://localhost:3001/graphql"
documents: "src/**/*.graphql"
generates:
  src/generated/graphql.tsx:
    plugins:
      - "typescript"
      - "typescript-operations"
      - "typescript-react-apollo"
  ./graphql.schema.json:
    plugins:
      - "introspection"

下面是我用来生成类型（yarn schema）的package.json脚本：

"schema": "graphql-codegen --config codegen.yml"

所有这些都是通过执行cli向导yarn codegen init自动生成的。
但是当我运行yarn schema时，我得到了以下错误：

（服务器正以http://localhost:3001/graphql运行，并公开了图形模式。
谢谢你的帮助和建议
下面是托管在我的服务器（http://localhost:3001/graphql）上的.graphql文件

# -----------------------------------------------
# !!! THIS FILE WAS GENERATED BY TYPE-GRAPHQL !!!
# !!!   DO NOT MODIFY THIS FILE BY YOURSELF   !!!
# -----------------------------------------------

"""Date custom scalar type"""
scalar Date

type Mutation {
  create_user(user: UserInput!): User!
  create_pofficer(pofficer: POfficerCreateInput!): POfficer!
  create_incident(incident: TIncidentInput!): TIncident!
  add_incident_type(incident_type: TIncidentTypeInput!): TIncidentType!
}

type POfficer {
  _id: ID!
  userid: ID!
  user: User!
}

input POfficerCreateInput {
  name: String!
  surname: String!
  phone: String!
}

type Query {
  users: [User!]!
  pofficers: [POfficer!]!
  incidents: [TIncident!]!
  incident_types: [TIncidentType!]!
}

type TIncident {
  _id: ID!
  createdAt: Date!
  incidenttype_id: ID!
  pofficer_id: ID!
  toffender_id: ID
  toffender_phone: String!
  carnumber: String!
  incident_status: String!
  pofficer: POfficer!
  toffender: User!
  incident_type: TIncidentType!
}

input TIncidentInput {
  incidenttype_id: ID!
  pofficer_id: ID!
  toffender_phone: String!
  carnumber: String!
}

type TIncidentType {
  _id: ID!
  name: String!
  description: String
}

input TIncidentTypeInput {
  name: String!
  description: String
}

type User {
  _id: ID!
  name: String!
  surname: String!
  email: String
  phone: String!
}

input UserInput {
  name: String!
  surname: String!
  email: String!
  phone: String!
}