Angular $injector:unpr] Unknown provider: - angularjs

Question

Working through a test app with a service and I keep getting an error about adding the service using the factory method. Not sure why, i know i am probably staring right at the problem..
The error i get is:
VM497 angular.js:10126 Error: [$injector:unpr] Unknown provider: githubProvider <- github
http://errors.angularjs.org/1.2.28/$injector/unpr?p0=githubProvider%20%3C-%20github
Thanks in advance.
(function() {
var github = function($http) {
var getUser = function(username) {
return $http.get('https://api.github.com/users/' + username).then(function(response) {
return response.data
});
};
var getRepos = function(user) {
return $http.get(user.repos_url).then(function(response) {
return response.data;
});
};
return {
getUser: getUser,
getRepos: getRepos
};
};
var module = angular.module("githubViewer");
module.factory('github', github) ;
});
Controller that injects the service
// Code goes here
(function() {
var app = angular.module("githubviewer", []);
var MainController = function(
$scope, github, $interval,
$log, $anchorScroll, $location) {
var onUserComplete = function(data) {
$scope.user = data;
github.getRepos($scope.user).then(onRepos, onError);
};
var onRepos = function(data){
$scope.repos = data;
$location.hash("userDetails");
$anchorScroll();
}
var onError = function(reason) {
$scope.error = "Could not fetch the Data";
};
var decrementCountDown = function(){
$scope.countdown -= 1;
if($scope.countdown < 1){
$scope.search($scope.username);
}
};
var countDownInterval = null;
var startCountDown = function(){
countDownInterval = $interval(decrementCountDown, 1000, $scope.countdown);
};
$scope.search = function(username){
$log.info("Searching for: " + username);
github.getUser(userName).then(onUserComplete, onError);
if (countDownInterval) {
$interval.cancel(countDownInterval);
}
};
$scope.username = "angular";
$scope.message = "GitHub Viewer";
$scope.repoSortOrder = "-stargazers_count";
$scope.countdown = 5;
startCountDown();
};
app.controller("MainController", MainController)
}());

Answer 1

You need to inject the service into app, from the code you posted. you are not injecting anything into the module.
var app = angular.module("githubviewer", ['yourservice', function(yourservice){}]);
This should get you headed in the right direction.

Answer 2

found my problem, the name of my module had a typo on capitalization. The V in Viewer was wrong.
Controller - var app = angular.module("githubviewer", []);
Service - var module = angular.module("githubViewer");