Log stack trace as string too for exceptions

StackTraceProcessor.php

<?php

declare(strict_types=1);

namespace App\Monolog;

use Throwable;

/**
 * log stack trace instead of exception class
 */
class StackTraceProcessor
{
    public function __invoke(array $record): array
    {
        foreach($record['context'] as $key => $data) {
            if ($data instanceof Throwable && !in_array('backtrace', $record['context'], true)) {
                $record['extra']['backtrace'] = $data->getTraceAsString();
                unset($record['context'][$key]);
            }
        }

        return $record;
    }
}