Request url must be str or unicode, got (type(url).__name__)

Raise code

        return self._meta

    def _get_url(self):
        return self._url

    def _set_url(self, url):
        if not isinstance(url, str):
            raise TypeError(f'Request url must be str or unicode, got {type(url).__name__}')

        s = safe_url_string(url, self.encoding)
        self._url = escape_ajax(s)

        if (
            '://' not in self._url
            and not self._url.startswith('about:')