"Error: incorrect header check" Cypress 6.2.1

I made a request using Cypress 6.3.0 and received an error.

I can make this same request using Postman or curl with no issues.

Current behavior

I make a request and receive the following error: Error: incorrect header check

Desired behavior

200 OK should be returned as a response

Test code to reproduce

cy.request('https://www.cmmiinstitute.com/');

Versions

Cypress 6.3.0 Windows 10 Enterprise

[bahmutov]

Since the problem seems to be in gzipped response, let’s disable gzip using https://on.cypress.io/request options

/// <reference types="cypress" />
describe('Cypress Request to our page', () => {
  it('causes an incorrect header check exception to be thrown', () => {
    // https://on.cypress.io/request
    cy.request({
      url: 'https://cmmiinstitute.com/',
      gzip: false
    });
  });
});

Working!

Final solution

If cy.request is getting error “incorrect header check” use gzip: true option

[bahmutov]

Can we have a reproducible example to debug this?