My Server is sending back an error

Our server that runs are scrapes returned an odd error on most of our scraping sessions, Unexpected error invoking screen-scraper for session fun--newtonbartlett on host server2, port 8778: Connection refused @version:1 @timestamp:May 2nd 2016, 01:46:24.219 type:log4j host:172.30.7.179:39004 path:com.fsboleader.service.ScreenscraperService priority:ERROR logger_name:com.fsboleader.service.ScreenscraperService thread:http-8080-2 class:com.fsboleader.service.ScreenscraperService file:ScreenscraperService.java:54 method:startLazyScrape tags:_grokparsefailure _id:sfzCK7oJSmmvaLIr5k6UMg _type:log4j _index:fsboleader-2016.05.02
fun--newtobbartlett, is the name of scraping session in particular and it returns like that on almost all of our scrapes