title: Symfony 5.2.3 interface type-hinting
body: <p>Since I updated my <code>composer.json</code> (I just switched <code>symfony</code>, <code>console</code>, <code>dotenv</code>, <code>framework-bundle</code>, <code>yaml</code> versions from <code>&quot;5.0.*</code> to,<code>&quot;5.2.*</code>), I have this error:</p>
  <p><code>syntax error, unexpected '|', expecting variable (T_VARIABLE)</code> coming from line 27, file <code>vendor/psr/link/src/EvolvableLinkInterface.php</code>.</p>
  <p>(<code>public function withHref(string|\Stringable $href);</code>)</p>
  <p>I decided to remove one of my facultative parameter type hint (eg. <code>\Stringable</code>) and it worked well.</p>
  <p>I'm running under <code>PHP 7.4.15</code>.</p>
  <p>Do you know how could I fixed it?</p>