Error: $scope.challengeTypes is undefined

[Jnchi]

Location: Admin > Create Challenges

Error: $scope.challengeTypes is undefined
@http://localhost:3000/modules/challenges/client/controllers/challenge.update.client.controller.js:45:7
processQueue@http://localhost:3000/lib/angular.js:13318:27
scheduleProcessQueue/<@http://localhost:3000/lib/angular.js:13334:39
$eval@http://localhost:3000/lib/angular.js:14570:28
$digest@http://localhost:3000/lib/angular.js:14386:31
$apply@http://localhost:3000/lib/angular.js:14675:24
done@http://localhost:3000/lib/angular.js:9725:47
completeRequest@http://localhost:3000/lib/angular.js:9915:15
requestLoaded@http://localhost:3000/lib/angular.js:9856:24

[Jnchi]

Source: https://github.com/CyberNinjas/TallyCTF/blob/master/modules/challenges/client/controllers/challenge.client.controller.js