Symfony version(s) affected: 4.3.2

Description
If a route collection contains a route where _controller is an array (e.g. [FooController::class, 'bar']), Symfony\Bundle\FrameworkBundle\Console\Descriptor\TextDescriptor::formatControllerLink will throw an exception.

How to reproduce
I've created a reproducer

https://github.com/Kyoushu/symfony-text-descriptor-bug

Relevant code can be found in bug.php

Possible Solution
Catching TypeError will silence the exception, but won't really solve the underlying problem