Classes/Console/Error/ExceptionRenderer.php
private function outputException(\Throwable $exception, OutputInterface $output)
    {
        $exceptionClass = get_class($exception);
        if ($exception instanceof SubProcessException) {
            $exceptionClass = $exception->getPreviousExceptionClass();
        }

        $title = sprintf('[ %s ]', $exceptionClass);

        $messageLength = Helper::strlen($title);
        $maxWidth = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX;

        $lines = [];
        foreach (preg_split('/\r?\n/', trim($exception->getMessage())) as $line) {
            foreach ($this->splitStringByWidth($line, $maxWidth - 4) as $splitLine) {
                $lines[] = $splitLine;
                $messageLength = max(Helper::strlen($splitLine), $messageLength);
            }
        }

        $messages = [];
        $messages[] = $emptyLine = $this->padMessage('', $messageLength);
        $messages[] = $this->padMessage($title, $messageLength);
        foreach ($lines as $line) {
            $messages[] = $this->padMessage(OutputFormatter::escape($line), $messageLength);
        }
        $messages[] = $emptyLine;
        $messages[] = '';
        $output->writeln($messages, OutputInterface::VERBOSITY_QUIET);
    }
private function outputException(\Throwable $exception, OutputInterface $output)
    {
        $exceptionClass = get_class($exception);
        if ($exception instanceof SubProcessException) {
            $exceptionClass = $exception->getPreviousExceptionClass();
        }

        $title = sprintf('[ %s ]', $exceptionClass);

        $messageLength = Helper::strlen($title);
        $maxWidth = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX;

        $lines = [];
        foreach (preg_split('/\r?\n/', trim($exception->getMessage())) as $line) {
            foreach ($this->splitStringByWidth($line, $maxWidth - 4) as $splitLine) {
                $lines[] = $splitLine;
                $messageLength = max(Helper::strlen($splitLine), $messageLength);
            }
        }

        $messages = [];
        $messages[] = $emptyLine = $this->padMessage('', $messageLength);
        $messages[] = $this->padMessage($title, $messageLength);
        foreach ($lines as $line) {
            $messages[] = $this->padMessage(OutputFormatter::escape($line), $messageLength);
        }
        $messages[] = $emptyLine;
        $messages[] = '';
        $output->writeln($messages, OutputInterface::VERBOSITY_QUIET);
    }
Output formatted exception.

@param \Throwable $exception
@param OutputInterface $output