Q:

MinkContext - it is not an interface

Im trying to integrate behat on symfony 3.4 with the mink component, i already create the following behat.yml:
default:
  extensions:
    Behat\Symfony2Extension: ~
    Behat\MinkExtension:
     goutte: ~
     selenium2: ~
     base_url: http://mastersymfony.dev/app_dev.php

but when i run behat on console the following error pops:
Error: FeatureContext cannot implement Behat\MinkExtension\Context\MinkContext - it is not an interface

A:

You should extend MinkContext and implement Context
class FeatureContext extends MinkContext implements Context
{

