I am using iframe plugin to intract with iframes on cypress

[IamUmairIftikhar]

The iframe test cases are working fine on my local device but when I push the code on GitLab and run it on CI. It is not running

I have installed the plugin using:
npm install –D cypress-iframe

Imported the module like:
import '../../node_modules/cypress-iframe';:

here's my code:
verifyEmailAddress(){
this.verifyemailaddress.click().clear().type('testautomationcarnivalist')
cy.get('[title="Check Inbox @yopmail.com"]').click()
cy.url().should('include', '/wm')
cy.contains('testautomationcarnivalist@yopmail.com').should('be.visible')
cy.iframe('[name="ifmail"]').within(() => {
cy.contains('Verify').click();
});
cy.wait(5000)
}

Error I am getting: