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://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:27094:126 https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:27339:23 https://mantik.istanbul.edu.tr/js/disabled-app-97e2ae1dd1.min.js:1:27263 processQueue@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:31751:30 https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:31767:39 $eval@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:33019:28 $digest@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:32835:36 $apply@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:33127:31 done@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:27448:53 completeRequest@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:27646:15 requestLoaded@https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:27587:24 undefined https://mantik.istanbul.edu.tr/js/vendor-a003fac506.min.js:29418