Cannot read property validateTokenAuth error

I use Angular2TokenService (angular2-token 0.2.0) with Ionic 3.9.2 and after app starts then show me error like

Cannor read property validateTokenAuth of undefined.

Error point to vendor.js line with this.atOptions.validateTokenAuth . I don’t know why atOptions is undefined and I need help, because I stucked and can’t move forward.


  • Angular 5.2.9