I've finally gotten around to the the 1.0.3 build of the native app. When I try to do a 'expo build

s' I get he following error. I don't completely understand how all of the parts work and which camp this is in.
the Error:
Unable to resolve module `@expo/vector-icons/Fontisto` from `/Users/daniel/dev/esm-csi-103.7/node_modules/native-base/dist/src/basic/IconNB.js`: Module `@expo/vector-icons/Fontisto` does not exist in the Haste module map
I've tried fresh download of the Native App (v1.0.3) an update of Expo & Yarn. I have also followed the suggested steps by Expo Metro builder. I do understand that custom builds are not supported, however if you could point me the right direction, it would be greatly appreciated. Thanks!