It looks like the UMAppLoader is not installed when ejecting or installing react-native-unimodules. This causes issues wif you want to use packages such as the task-manager.
I had to install it manually, after downloading the Expo repo. The install for task-manager crashes at the dependency of the UMAppLoader
Expo is a large repo, would be happy to do a commit to help fix this, not so familiar with it though.
This will affect me in the future though, I would like to get this installed by default and not worry about maintaining it separate. thanks.