Google\Cloud\Logging\PsrLogger::error PHP Method

Example: $psrLogger->error('error message');

public error ( string $message, array $context = [] )
$message	string	The message to log.
$context	array	[optional] Please see {@see \Google\Cloud\Logging\PsrLogger::log()} for the available options.

    public function error($message, array $context = [])
    {
        $this->log(Logger::ERROR, $message, $context);
    }

PsrLogger