**Symfony version(s) affected**: 4.4 **Description** This probably was introduced in https://github.com/symfony/symfony/pull/30301. Links in CLI is a great thing by it should fail gracefully when not supported. **How to reproduce** Run the following script in Gnome Terminal 3.6.2. ``` <?php use Symfony\Component\VarDumper\VarDumper; require __DIR__ . '/vendor/autoload.php'; class Foo {} VarDumper::dump(new Foo()); ``` The output would be like follows:  **Possible Solution** Render links only if user terminal supports it.