error in new version 5.1

( 58/1080) MEO.PT -- chan. (xmltv_id=TVI FICÇÃO) -- mode Force
[Warning ] error downloading page: An error occurred while sending the request.
[Error ] Unable to update channel TVI FICÇÃO
[Critical] Generic syntax exception:
[Critical] message:
[Error ] no index page data received from TVI FICÇÃO
[Error ] unable to update channel, try again later
[ Info ] Existing guide data restored!

i have this error in multiple channls that happen when i have updated to new version 5.1