Icons are not loading from local directory into iOS app



I am using maki icons (https://www.mapbox.com/maki-icons/) in my app and located the icons dir inside public directory(public//img/maki/).

Icons are displaying correctly on landing page but when I navigate to other modal/page, icons not displayed.
I am facing this issue with slow internet connection only and when I inspected the device in safari, it shows ‘Failed to load resource from server’ for icons.

Does anyone have idea why internet speed affects the loading of local resources into the mobile application or how i can fix this issue?