ionic 3 Android/IOS Mobile Linq not working

[009topersky]

Thanks to this library makes my life easier

BUT..
Currently, I have a project running on ionic 3 + Angular 5

The problem is when i build the application on Android/IOS Device, the linq query is not working

Please HELP Me!
Thanks

[Flavio Corpa]

Hi! I'm sorry this question is too vage and scarce on details, can you please elaborate more? :)