404. That’s an error.
The requested URL /translate_c?depth=1&hl=de&rurl=translate.google.de&sl=it&sp=nmt4&tl=en&u=https://it.wikipedia.org/wiki/Progressive_rock&usg=ALkJrhjs10q20b45HPePPafkmzNZGD9mpg
was not found on this server. That’s all we know.