trying to test Chapter 6

[blozzy]

hi, i have bought the book, and try to run chapter 6 from here with ionic serve, but it fails while loading. the rest api on backend is working properly. any ideas ? thank you

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Datei: localhost:8100
HTML1300: Navigation wurde ausgeführt.
Datei: localhost:8100
SyntaxError: Ungültiges Zeichen
   at LSAPI.getAll (http://localhost:8100/js/factory.js:61:21)
   at Anonymous function (http://localhost:8100/js/controllers.js:110:9)
   at invoke (http://localhost:8100/lib/ionic/js/ionic.bundle.js:12884:7)
   at instantiate (http://localhost:8100/lib/ionic/js/ionic.bundle.js:12892:7)
   at Anonymous function (http://localhost:8100/lib/ionic/js/ionic.bundle.js:17161:7)
   at self.appendViewElement (http://localhost:8100/lib/ionic/js/ionic.bundle.js:48253:7)
   at switcher.render (http://localhost:8100/lib/ionic/js/ionic.bundle.js:46450:13)
   at switcher.init (http://localhost:8100/lib/ionic/js/ionic.bundle.js:46370:11)
   at self.render (http://localhost:8100/lib/ionic/js/ionic.bundle.js:48113:5)
   at self.register (http://localhost:8100/lib/ionic/js/ionic.bundle.js:48071:5) <ion-nav-view class="view-container" nav-view-transition="ios" name="menuContent">
`