Suddenly I'm getting "Error Parsing URL Error parsing input URL, no data was scraped."

Suddenly I'm getting "Error Parsing URL Error parsing input URL, no data
was scraped."

I'm getting this "Error Parsing URL Error parsing input URL, no data was
scraped." when i input url into fb debugger.
Facebook won't grab my links when submitted and this is becoming rather
frustrating.
The only changes i have made were to upgrade my server, but nothing to
code, no extra plugins etc etc
I'm using wordpress too, but older links are still working and newer ones
are not.
Any help would be hugely appreciated
Cormac