Request target is invalid when uri path is empty about laminas-diactoros HOT 1 OPEN

if (preg_match('#\s#', $requestTarget)) {
...

    public static function encode($value, $ignore = null)
    {
        if (null === $ignore) {
            $ignore = static::CHAR_UNRESERVED
                    . static::CHAR_GEN_DELIMS
                    . static::CHAR_SUB_DELIMS;
        }
        $rawurlencode = function (array $matches) {
            return rawurlencode($matches[0]);
        };

        return preg_replace_callback(
            '/(?:[^' . $ignore . '%]+|%(?![A-Fa-f0-9]{2}))/',
            $rawurlencode,
            $value
        );
    }

    /**
     * Decode URI-encoded strings.
     *
     * @param string $value The encoded string
     *
     * @return string The decoded string
     */
    public static function decode($value)
    {
        return rawurldecode($value);
    }

    protected function setTarget($target)
    {
        if ('*' == $target) {
            $this->target = $target;

            return $this;
        }
        $uri = new Uri($target);
        $this->target = (string) $uri;

        return $this;
    }