$previous_error_handler = \set_error_handler(static function (int $severity, string $message, string $file, int $line) use (&$previous_error_handler): bool {
                    self::debugf("In new error handler '$message'");
                    if (!\preg_match('/stream_socket_accept/i', $message)) {
                        return $previous_error_handler($severity, $message, $file, $line);
                    }