Add some errors where TODOs used to be
Add some errors where TODOs used to be

nullstyle/go-horizon,nullstyle/go-horizon,masonforest/go-horizon,stellar/horizon,irisli/horizon,stellar/horizon,masonforest/horizon,irisli/horizon,stellar/horizon,lackac/horizon,masonforest/horizon,masonforest/go-horizon,lackac/horizon,lackac/horizon,nullstyle/go-horizon,masonforest/horizon,irisli/horizon,masonforest/go-horizon