UMReactNativeAdapter not found in an ios build

trying to run an ios build for a project writen in react-native and ran into some issued. was trying to fix this "UMReactNativeAdapter not found" problem, read some solutions here but nothing worked, any suggestions?

i am using react-native-cli: 2.0.1, and in my podFile i added:

require_relative '../node_modules/react-native-unimodules/cocoapods'require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'require_relative '../node_modules/react-native-unimodules/cocoapods.rb'

thanks.