Problema com ng-repeat

Front-end
,
#1

Estou com problema ao listar os dados do banco de dados, já tentei colocar track by $index mas a quantidade de linhas que aparecem é diferente da quantidade existente no banco de dados, não sei oq fazer, estou tentando aprender angular com MySQL mas ta complicado…

      <table class="table table-striped">
             <tr>
                 <th>Title</th>
                 <th>Description</th>
                 <th>Added</th>
                 <th>Remove</th>
             </tr>
             <tr ng-repeat="blog in blogs">
                 <td>{{blog.id}}</td>
                 <td>{{blog.title}}</td>
                 <td>{{blog.description}}</td>
                 <td>{{blog.added_date}}</td>
                 <td><button class="btn btn-danger" ng-click="removeData(blog.id)">x</button></td>
             </tr>
         </table>

Erro:

     angular.min.js:108 Error: [ngRepeat:dupes] http://errors.angularjs.org/1.4.1/ngRepeat/dupes?p0=blog%20in%20blogs&p1=string%3A%3C&p2=%3C
         at Error (native)
         at http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:6:416
         at http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:278:39
         at Object.fn (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:131:92)
         at m.$digest (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:132:172)
         at m.$apply (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:135:161)
         at l (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:87:152)
         at N (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:91:187)
         at XMLHttpRequest.x.onload (http://localhost/DatabaseWithAngular-master/lib/angularjs/angular.min.js:92:220)(anonymous function) @ angular.min.js:108(anonymous function) @ angular.min.js:80$digest @ angular.min.js:132$apply @ angular.min.js:135l @ angular.min.js:87N @ angular.min.js:91x.onload @ angular.min.js:92

angular.module(‘controller’, [])

.controller(‘BlogCtrl’, [’$scope’, ‘$http’, ‘$log’, function ($scope, $http, $log) {

$http.get('./js/popData.php')
    .success(function (data) {
        $scope.blogs = data;
    })
    .error(function (err) {
        $log.error(err);
    })

}])

Projeto completo github

#2

Ele esta dando erro de chave duplicada.
Tenta fazer o track by pelo id.
Já tentou assim?

tr ng-repeat=“blog in blogs track by blog.id”