(uncaught exception) undefined: undefined

Current behavior

Here is the test case that is failing:

it('can create a new equipment model', () => {
    cy.clickOnElementByText('Equipment Models')
    cy.clickOnElementByText('Add model')
    cy.pickElementFromSelect('cy|type', equipmentType, '.ant-select-item')
    cy.get('cy|brand').type(modelBrand)
    cy.get('cy|name').type(modelName)
    cy.get('cy|description').type('description')
    cy.get('cy|cost').type(300)
    cy.contains('OK').click()
    // cy.searchTable(modelName)
    // cy.checkElementContainsValue('.ant-table-tbody', modelName)
  })

My test was not like this originally but I’ve tried to narrow it down as much as possible (by using normal cypress commands instead of custom ones for example).

I keep getting this error:

Right now it’s on the command pickElementFromSelect but it also happens on the cy.get ones, it seems like a very random behavior.

I’m not sure where it comes from. There are no other errors in the console during execution and the app just workes fine when I test it manually.

Is there a way to know where this comes from?

Desired behavior

The commands should just be executed.

Versions

• Using Chrome 90, but also saw this with Edge 90
• Cypress 7.3.0 (also had it on 7.2.0)
• MacOS 11.2.3 (It also happens in CI on Ubuntu 18.04.5)

Working versions

My tests seem to run fine on 6.5.0, but not on the latest version

[ushashir]

I am having a similar issue with version 11.0.0

[titivermeesch]

Having this as well with the latest version, had it as well with v8.3.0. I’m currently stuck at 6.5 because everything else seems to fail the tests instantly