RSS Feed Error - XML Document is Invalid

Some feeds work, others do not.
Proxy settings are entered correctly and functioning well.

Error message in the log:
Feed Error: This XML document is invalid, likely due to invalid characters. XML error: Mismatched tag at line 98, column 172

Is there a solution?

I want to apologize for my bad english.

Thank you,

The error message suggests that the feed contains errors.

I’ve run the URL in your screenshot through a validator and it seems OK now, so perhaps the feed has been fixed in the interim?

HI Alex
I added to a layout using ‘Webpage’, I can see the preview but it doesn’t extend to the signboard when i add to the schedule. What else should i do?