Ionic 2: request PATCH not allow on iOS 10

Hello everybody. I faced with next problem: I develop mobile application, there are different requests (POST/GET/PATCH). I tested the app on various version iOS: 9.3 & 10.0, 10.1. i have the PATCH request, which update the data. On iOS 9.3 everything is fine, but on iOS >=10 I have error: 405 code PATCH not allow method. I can’t find reason of it. Maybe somebody knows about it?