TypeError: undefined is not a function at Scope.$rootScope.hide while calling $ionicLoading?

Hello Everyone

When I try to signup the app there is a loading feature says “Please wait Authenticating”. Now this hangs on the screen and therefore the app does not work as it is intended to work.

Please have a look at this screen shot

My services.js looks something like this

angular.module('bucketList.services', [])
.factory('API', function ($rootScope, $http, $ionicLoading, $window) {
   var base = "http://localhost:9804";
    $rootScope.show = function (text) {
        $rootScope.loading = $ionicLoading.show({
            content: text ? text : 'Loading',
            animation: 'fade-in',
            showBackdrop: true,
            maxWidth: 200,
            showDelay: 0
        });
    };

    $rootScope.hide = function () {
        $ionicLoading.hide();
    };

    $rootScope.logout = function () {
        $rootScope.setToken("");
        $window.location.href = '#/auth/signin';
    };

    $rootScope.notify =function(text){
        $rootScope.show(text);
        $window.setTimeout(function () {
          $rootScope.hide();
        }, 1999);
    };

    $rootScope.doRefresh = function (tab) {
        if(tab == 1)
            $rootScope.$broadcast('fetchAll');
        else
            $rootScope.$broadcast('fetchCompleted');
        
        $rootScope.$broadcast('scroll.refreshComplete');
    };

    $rootScope.setToken = function (token) {
        return $window.localStorage.token = token;
    }

    $rootScope.getToken = function () {
        return $window.localStorage.token;
    }

    $rootScope.isSessionActive = function () {
        return $window.localStorage.token ? true : false;
    }

    return {
        signin: function (form) {
            return $http.post(base+'/api/v1/bucketList/auth/login', form);
        },
        signup: function (form) {
            return $http.post(base+'/api/v1/bucketList/auth/register', form);
        },
        getAll: function (email) {
            return $http.get(base+'/api/v1/bucketList/data/list', {
                method: 'GET',
                params: {
                    token: email
                }
            });
        },
        getOne: function (id, email) {
            return $http.get(base+'/api/v1/bucketList/data/item/' + id, {
                method: 'GET',
                params: {
                    token: email
                }
            });
        },
        saveItem: function (form, email) {
            return $http.post(base+'/api/v1/bucketList/data/item', form, {
                method: 'POST',
                params: {
                    token: email
                }
            });
        },
        putItem: function (id, form, email) {
            return $http.put(base+'/api/v1/bucketList/data/item/' + id, form, {
                method: 'PUT',
                params: {
                    token: email
                }
            });
        },
        deleteItem: function (id, email) {
            return $http.delete(base+'/api/v1/bucketList/data/item/' + id, {
                method: 'DELETE',
                params: {
                    token: email
                }
            });
        }
    }
});

and My controllers.js look like this

angular.module('bucketList.controllers', ['bucketList.services'])

.controller('SignInCtrl', function ($rootScope, $scope, API, $window,$ionicLoading) {
    // if the user is already logged in, take him to his bucketlist
    if ($rootScope.isSessionActive()) {
        $window.location.href = ('#/bucket/list');
    }

    $scope.user = {
        email: "",
        password: ""
    };

    $scope.validateUser = function () {
        var email = this.user.email;
        var password = this.user.password;
        if(!email || !password) {
        	$rootScope.notify("Please enter valid credentials");
        	return false;
        }
        $rootScope.show('Please wait.. Authenticating');
        API.signin({
            email: email,
            password: password
        }).success(function (data) {
            $rootScope.setToken(email); // create a session kind of thing on the client side
            $rootScope.hide();
            $window.location.href = ('#/bucket/list');
        }).error(function (error) {
            $rootScope.hide();
            $rootScope.notify("Invalid Username or password");
        });
    }

})

.controller('SignUpCtrl', function ($rootScope, $scope, API, $window) {
    $scope.user = {
        email: "",
        password: "",
        name: ""
    };

    $scope.createUser = function () {
    	var email = this.user.email;
        var password = this.user.password;
        var uName = this.user.name;
        if(!email || !password || !uName) {
        	$rootScope.notify("Please enter valid data");
        	return false;
        }
        $rootScope.show('Please wait.. Registering');
        API.signup({
            email: email,
            password: password,
            name: uName
        }).success(function (data) {
            $rootScope.setToken(email); // create a session kind of thing on the client side
            $rootScope.hide();
            $window.location.href = ('#/bucket/list');
        }).error(function (error) {
            $rootScope.hide();
        	if(error.error && error.error.code == 11000)
        	{
        		$rootScope.notify("A user with this email already exists");
        	}
        	else
        	{
        		$rootScope.notify("Oops something went wrong, Please try again!");
        	}
            
        });
    }
})

.controller('myListCtrl', function ($rootScope, $scope, API, $timeout, $ionicModal, $window) {
    $rootScope.$on('fetchAll', function(){
            API.getAll($rootScope.getToken()).success(function (data, status, headers, config) {
            $rootScope.show("Please wait... Processing");
            $scope.list = [];
            for (var i = 0; i < data.length; i++) {
                if (data[i].isCompleted == false) {
                    $scope.list.push(data[i]);
                }
            };
            if($scope.list.length == 0)
            {
                $scope.noData = true;
            }
            else
            {
                $scope.noData = false;
            }

            $ionicModal.fromTemplateUrl('templates/newItem.html', function (modal) {
                $scope.newTemplate = modal;
            });

            $scope.newTask = function () {
                $scope.newTemplate.show();
            };
            $rootScope.hide();
        }).error(function (data, status, headers, config) {
            $rootScope.hide();
            $rootScope.notify("Oops something went wrong!! Please try again later");
        });
    });

    $rootScope.$broadcast('fetchAll');

    $scope.markCompleted = function (id) {
        $rootScope.show("Please wait... Updating List");
        API.putItem(id, {
            isCompleted: true
        }, $rootScope.getToken())
            .success(function (data, status, headers, config) {
                $rootScope.hide();
                $rootScope.doRefresh(1);
            }).error(function (data, status, headers, config) {
                $rootScope.hide();
                $rootScope.notify("Oops something went wrong!! Please try again later");
            });
    };



    $scope.deleteItem = function (id) {
        $rootScope.show("Please wait... Deleting from List");
        API.deleteItem(id, $rootScope.getToken())
            .success(function (data, status, headers, config) {
                $rootScope.hide();
                $rootScope.doRefresh(1);
            }).error(function (data, status, headers, config) {
                $rootScope.hide();
                $rootScope.notify("Oops something went wrong!! Please try again later");
            });
    };

})

.controller('completedCtrl', function ($rootScope,$scope, API, $window) {
        $rootScope.$on('fetchCompleted', function () {
            API.getAll($rootScope.getToken()).success(function (data, status, headers, config) {
                $scope.list = [];
                for (var i = 0; i < data.length; i++) {
                    if (data[i].isCompleted == true) {
                        $scope.list.push(data[i]);
                    }
                };
                if(data.length > 0 & $scope.list.length == 0)
                {
                    $scope.incomplete = true;
                }
                else
                {
                    $scope.incomplete= false;
                }
                
                if(data.length == 0)
                {
                    $scope.noData = true;
                }
                else
                {
                    $scope.noData = false;
                }
            }).error(function (data, status, headers, config) {
                $rootScope.notify("Oops something went wrong!! Please try again later");
            });

        });
        
        $rootScope.$broadcast('fetchCompleted');
        $scope.deleteItem = function (id) {
            $rootScope.show("Please wait... Deleting from List");
            API.deleteItem(id, $rootScope.getToken())
                .success(function (data, status, headers, config) {
                    $rootScope.hide();
                    $rootScope.doRefresh(2);
                }).error(function (data, status, headers, config) {
                    $rootScope.hide();
                    $rootScope.notify("Oops something went wrong!! Please try again later");
                });
        };
    })

.controller('newCtrl', function ($rootScope, $scope, API, $window) {
        $scope.data = {
	        item: ""
	    };

        $scope.close = function () {
            $scope.modal.hide();
        };

        $scope.createNew = function () {
			var item = this.data.item;
        	if (!item) return;
            $scope.modal.hide();
            $rootScope.show();
            
            $rootScope.show("Please wait... Creating new");

            var form = {
                item: item,
                isCompleted: false,
                user: $rootScope.getToken(),
                created: Date.now(),
                updated: Date.now()
            }

            API.saveItem(form, form.user)
                .success(function (data, status, headers, config) {
                    $rootScope.hide();
                    $rootScope.doRefresh(1);
                })
                .error(function (data, status, headers, config) {
                    $rootScope.hide();
                    $rootScope.notify("Oops something went wrong!! Please try again later");
                });
        };
    })

If anyone encountered the same problem before please let me know the issue.