AWB will throw "Error parsing data returned by server: Cannot find <page> element" with call stack "at WikiFunctions.API.ApiEdit.Open(String title, Boolean resolveRedirects)" when it reaches a redirect that targets interwiki
More information here: https://en.wikipedia.org/wiki/Wikipedia_talk:AutoWikiBrowser/Bugs/Archive_28#Error_parsing_data_returned_by_server:_Cannot_find_.3Cpage.3E_element