Error: [$http:badreq] Http request configuration url must be a string. Received: undefined http://errors.angularjs.org/1.5.3/$http/badreq?p0=undefined $http@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:27161:126 https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:27406:23 https://ichsa.istanbulc.edu.tr/js/app.min.js:1743:30 processQueue@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:31818:30 https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:31834:39 $eval@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:33086:28 $digest@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:32902:36 $apply@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:33194:31 done@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:27515:53 completeRequest@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:27713:15 requestLoaded@https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:27654:24 undefined https://ichsa.istanbulc.edu.tr/js/vendor-8dc9cb5f3c.min.js:29485