问Cypress没有从cypress.env.json中找到环境变量

EN

tests
  cypress.env.json
  cypress
    fixtures
    integration
      test
        test.spec.ts
    plugins
    support

{
  "loginTestStage": {
    "admin": {
      "username": "value1",
      "password": "value2"
    },
    "user": {
      "username": "value3",
      "password": "value4"
    }
  },
  "vatid" : {
    "x1": "value5",
    "x2": "value6",
    "x3": "value7",
    "x4": "value8"
  }
}

describe('Login', () => {
    const usernameInput = '[formcontrolname="username"]';
    const passwordInput = '[formcontrolname="password"]';
    beforeEach(() => {
        cy.visit(url)
    })

    it('Allow users with valid credentials to login', () => {
        const { username, password } = Cypress.env('loginTestStage').admin;
        cy.get(usernameInput).type(username);
        cy.get(passwordInput).type(password);
        ...

    })
})

Cannot read properties of undefined (reading 'admin')