$this->assertStringStartsWith('The website encountered an unexpected error. Please try again later.</br></br><em class="placeholder">Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException</em>: Not acceptable format: json<script>alert(123);</script> in <em class="placeholder">',$response->getContent());
$this->assertStringStartsWith('The website encountered an unexpected error. Please try again later.<br><br><em class="placeholder">Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException</em>: Not acceptable format: json<script>alert(123);</script> in <em class="placeholder">',$response->getContent());
$this->stringStartsWith('The website encountered an unexpected error. Please try again later.</br></br><em class="placeholder">Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException</em>: test message in ',$response->getContent());
$this->stringStartsWith('The website encountered an unexpected error. Please try again later.<br><br><em class="placeholder">Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException</em>: test message in ',$response->getContent());