The pluginsFile configuration option you have supplied has been replaced with setupNodeEvents.

This new option is not a one-to-one correlation and it must be configured separately as a testing type property: e2e.setupNodeEvents and component.setupNodeEvents

{
  e2e: {
    setupNodeEvents()
  },
  component: {
    setupNodeEvents()
  },
}

https://on.cypress.io/migration-guide