Call to undefined function rm_translate

2015/09/14 04:29:16 [error] 9240#0: *1955682 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 195.64.208.232, server: test.sionauto.ru, request: "GET /index.php/install/wizard/installDb/ HTTP/1.1", upstream: "http://195.2.240.117:8080/index.php/install/wizard/installDb/", host: "test.sionauto.ru", referrer: "http://test.sionauto.ru/index.php/install/wizard/config/?config%5Blocale%5D=ru_RU&config%5Btimezone%5D=Asia%2FYekaterinburg&config%5Bcurrency%5D=RUB"
2015/09/14 04:29:16 [error] 9240#0: *1955682 open() "/home/admin/web/test.sionauto.ru/document_errors/50x.html" failed (2: No such file or directory), client: 195.64.208.232, server: test.sionauto.ru, request: "GET /index.php/install/wizard/installDb/ HTTP/1.1", upstream: "http://195.2.240.117:8080/index.php/install/wizard/installDb/", host: "test.sionauto.ru", referrer: "http://test.sionauto.ru/index.php/install/wizard/config/?config%5Blocale%5D=ru_RU&config%5Btimezone%5D=Asia%2FYekaterinburg&config%5Bcurrency%5D=RUB"
[Mon Sep 14 04:30:27 2015] [error] [client 195.64.208.232] PHP Fatal error: Call to undefined function rm_translate() in /home/admin/web/test.sionauto.ru/public_html/app/code/local/Df/Core/Helper/DataM.php on line 7