Internal Server Error

MartiniError: Undefined array key 1

    in /var/www/html/martini-git/src/modules/S1JobsModule.php at line 210

#0 /var/www/html/martini-git/src/modules/S1JobsModule.php(210): ErrorHandler::handleError()
#1 /var/www/html/martini-git/src/core/ModuleController.php(229): S1JobsModule->generateIndustrySector()
#2 /var/www/html/martini-git/src/core/ModuleController.php(181): ModuleController->callAction()
#3 /var/www/html/martini-git/src/core/ModuleController.php(58): ModuleController->handleRequest()
#4 /var/www/html/martini-git/src/web.php(626): ModuleController->handleDisplayRequest()
#5 /var/www/html/martini-git/src/web.php(107): RequestHandler->handleRequestInternal()
#6 /var/www/html/martini-git/lib/http.php(77): RequestHandler->handleRequest()
#7 /var/www/html/martini-git/htdocs/index.php(155): HttpApplication->run()
#8 {main}