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renderException example

public function render(\Throwable $exception): FlattenException
    {
        $headers = ['Content-Type' => 'text/html; charset='.$this->charset];
        if (\is_bool($this->debug) ? $this->debug : ($this->debug)($exception)) {
            $headers['X-Debug-Exception'] = rawurlencode($exception->getMessage());
            $headers['X-Debug-Exception-File'] = rawurlencode($exception->getFile()).':'.$exception->getLine();
        }

        $exception = FlattenException::createWithDataRepresentation($exception, null, $headers);

        return $exception->setAsString($this->renderException($exception));
    }

    /** * Gets the HTML content associated with the given exception. */
    public function getBody(FlattenException $exception): string
    {
        return $this->renderException($exception, 'views/exception.html.php');
    }

    /** * Gets the stylesheet associated with the given exception. */

private function displayTxt(OutputInterface $output, SymfonyStyle $io, array $filesInfo, bool $errorAsGithubAnnotations = false): int
    {
        $errors = 0;
        $githubReporter = $errorAsGithubAnnotations ? new GithubActionReporter($output) : null;

        foreach ($filesInfo as $info) {
            if ($info['valid'] && $output->isVerbose()) {
                $io->comment('<info>OK</info>'.($info['file'] ? sprintf(' in %s', $info['file']) : ''));
            } elseif (!$info['valid']) {
                ++$errors;
                $this->renderException($io, $info['template'], $info['exception'], $info['file'], $githubReporter);
            }
        }

        if (0 === $errors) {
            $io->success(sprintf('All %d Twig files contain valid syntax.', \count($filesInfo)));
        } else {
            $io->warning(sprintf('%d Twig files have valid syntax and %d contain errors.', \count($filesInfo) - $errors, $errors));
        }

        return min($errors, 1);
    }