Issues in the recommendations

Unit test fail

SUMMARY:
✔ 8 tests completed
✖ 1 test failed

FAILED TESTS:
  StackOverviewComponent
    ✖ Component has to be present
      PhantomJS 2.1.1 (Linux 0.0.0)
    Error: No provider for StackAnalysesService! in config/karma-test-shim.js (line 81534)
    ZoneAwareError@webpack:///~/zone.js/dist/zone.js:923:0 <- config/karma-test-shim.js:81534:28
    injectionError@webpack:///~/@angular/core/@angular/core.es5.js:1231:21 <- config/karma-test-shim.js:2110:91
    noProviderError@webpack:///~/@angular/core/@angular/core.es5.js:1269:0 <- config/karma-test-shim.js:2148:26
    _throwOrNull@webpack:///~/@angular/core/@angular/core.es5.js:2770:0 <- config/karma-test-shim.js:3649:34
    _getByKeyDefault@webpack:///~/@angular/core/@angular/core.es5.js:2809:0 <- config/karma-test-shim.js:3688:37
    _getByKey@webpack:///~/@angular/core/@angular/core.es5.js:2741:0 <- config/karma-test-shim.js:3620:41
    get@webpack:///~/@angular/core/@angular/core.es5.js:2610:0 <- config/karma-test-shim.js:3489:30
    get@webpack:///~/@angular/core/@angular/core.es5.js:3557:0 <- config/karma-test-shim.js:4436:55
    resolveDep@webpack:///~/@angular/core/@angular/core.es5.js:10930:0 <- config/karma-test-shim.js:11809:48
    createClass@webpack:///~/@angular/core/@angular/core.es5.js:10791:0 <- config/karma-test-shim.js:11670:101
    createDirectiveInstance@webpack:///~/@angular/core/@angular/core.es5.js:10627:21 <- config/karma-test-shim.js:11506:48
    createViewNodes@webpack:///~/@angular/core/@angular/core.es5.js:11977:33 <- config/karma-test-shim.js:12856:72
    createRootView@webpack:///~/@angular/core/@angular/core.es5.js:11882:0 <- config/karma-test-shim.js:12761:20
    callWithDebugContext@webpack:///~/@angular/core/@angular/core.es5.js:13013:25 <- config/karma-test-shim.js:13892:47
    debugCreateRootView@webpack:///~/@angular/core/@angular/core.es5.js:12474:0 <- config/karma-test-shim.js:13353:32
    create@webpack:///~/@angular/core/@angular/core.es5.js:9818:25 <- config/karma-test-shim.js:10697:60
    initComponent@webpack:///~/@angular/core/@angular/core/testing.es5.js:800:0 <- config/karma-test-shim.js:20251:55
    invoke@webpack:///~/zone.js/dist/zone.js:365:0 <- config/karma-test-shim.js:80976:31
    onInvoke@webpack:///~/zone.js/dist/proxy.js:79:0 <- config/karma-test-shim.js:80556:45
    invoke@webpack:///~/zone.js/dist/zone.js:364:0 <- config/karma-test-shim.js:80975:40
    onInvoke@webpack:///~/@angular/core/@angular/core.es5.js:4125:0 <- config/karma-test-shim.js:5004:43
    invoke@webpack:///~/zone.js/dist/zone.js:364:0 <- config/karma-test-shim.js:80975:40
    run@webpack:///~/zone.js/dist/zone.js:125:0 <- config/karma-test-shim.js:80736:49
    run@webpack:///~/@angular/core/@angular/core.es5.js:3994:42 <- config/karma-test-shim.js:4873:65
    createComponent@webpack:///~/@angular/core/@angular/core/testing.es5.js:803:0 <- config/karma-test-shim.js:20254:61
    createComponent@webpack:///~/@angular/core/@angular/core/testing.es5.js:610:0 <- config/karma-test-shim.js:20061:44
    webpack:///src/app/stack/overview/overview.component.spec.ts:34:42 <- config/karma-test-shim.js:84038:97
    invoke@webpack:///~/zone.js/dist/zone.js:365:0 <- config/karma-test-shim.js:80976:31
    onInvoke@webpack:///~/zone.js/dist/proxy.js:79:0 <- config/karma-test-shim.js:80556:45
    invoke@webpack:///~/zone.js/dist/zone.js:364:0 <- config/karma-test-shim.js:80975:40
    run@webpack:///~/zone.js/dist/zone.js:125:0 <- config/karma-test-shim.js:80736:49
    webpack:///~/zone.js/dist/jasmine-patch.js:104:0 <- config/karma-test-shim.js:80270:37
    webpack:///~/@angular/core/@angular/core/testing.es5.js:96:0 <- config/karma-test-shim.js:19547:31
    invoke@webpack:///~/zone.js/dist/zone.js:365:0 <- config/karma-test-shim.js:80976:31
    onInvoke@webpack:///~/zone.js/dist/async-test.js:49:0 <- config/karma-test-shim.js:79865:45
    onInvoke@webpack:///~/zone.js/dist/proxy.js:76:0 <- config/karma-test-shim.js:80553:47
    invoke@webpack:///~/zone.js/dist/zone.js:364:0 <- config/karma-test-shim.js:80975:40
    run@webpack:///~/zone.js/dist/zone.js:125:0 <- config/karma-test-shim.js:80736:49
    webpack:///~/@angular/core/@angular/core/testing.es5.js:91:0 <- config/karma-test-shim.js:19542:28
    webpack:///~/zone.js/dist/async-test.js:38:0 <- config/karma-test-shim.js:79854:46
    invokeTask@webpack:///~/zone.js/dist/zone.js:398:0 <- config/karma-test-shim.js:81009:36
    runTask@webpack:///~/zone.js/dist/zone.js:165:0 <- config/karma-test-shim.js:80776:57
    invoke@webpack:///~/zone.js/dist/zone.js:460:0 <- config/karma-test-shim.js:81071:45
    timer@webpack:///~/zone.js/dist/zone.js:1540:0 <- config/karma-test-shim.js:82151:34