[atresplayer] Fix login error detection

youtube_dl/extractor/atresplayer.py

@@ -90,7 +90,8 @@ class AtresPlayerIE(InfoExtractor):
             request, None, 'Logging in as %s' % username)
 
         error = self._html_search_regex(
-            r'(?s)<ul class="list_error">(.+?)</ul>', response, 'error', default=None)
+            r'(?s)<ul[^>]+class="[^"]*\blist_error\b[^"]*">(.+?)</ul>',
+            response, 'error', default=None)
         if error:
             raise ExtractorError(
                 'Unable to login: %s' % error, expected=True)