[extractor] Fix --load-pages

yt_dlp/extractor/common.py

@@ -1042,7 +1042,7 @@ def download_content(self, url_or_request, video_id, note=note, errnote=errnote,
                              fatal=True, encoding=None, data=None, headers={}, query={}, expected_status=None):
             if self.get_param('load_pages'):
                 url_or_request = self._create_request(url_or_request, data, headers, query)
-                filename = self._request_dump_filename(url_or_request.full_url, video_id)
+                filename = self._request_dump_filename(url_or_request.url, video_id)
                 self.to_screen(f'Loading request from {filename}')
                 try:
                     with open(filename, 'rb') as dumpf: