Issue #3223751 by lussoluca: Unable to decode output into JSON: Syntax error

    class: Monolog\Formatter\ScalarFormatter

  monolog.formatter.wildfire:

    class: Monolog\Formatter\WildfireFormatter

  monolog.formatter.drush:

    class: Drupal\monolog\Logger\Formatter\DrushFormatter

  # Should not be needed.

  monolog.processor.psr_log_message:

<?php

namespace Drupal\monolog\Logger\Formatter;

use Monolog\Formatter\LineFormatter;

/**

 * Formatter suitable to be using with Drush logs.

 */

class DrushFormatter extends LineFormatter {

    /**

     * {@inheritdoc}

     */

    protected function convertToString($data): string {

        if (null === $data || is_bool($data)) {

            return var_export($data, true);

        }

        if (is_scalar($data)) {

            return (string) $data;

        }

        $result = "";

        array_walk($data, function($val, $key) use(&$result) {

            if ($val != "") {

                $result .= " | $key=$val";

            }

        });

        return ltrim($result);

    }

}