How to run command from bundle in app controller in Symfony3?

Question

INTRODUCTION

In my personal project I am using:

1. Symfony v3.2.7
2. PHP v7.1.1
3. CravlerMaxMindGeoIpBundle
4. How to Call a Command

Answer 1

It is a common mistake to import:

use Symfony\Component\Console\Application;

instead of:

use Symfony\Bundle\FrameworkBundle\Console\Application;

So make sure to import the second class (from FrameworkBundle) to load all configured commands (external or not) correctly.