Revert "remove printfs"
Revert "remove printfs"

This reverts commit c817e21a539935bc8fd0d1349a1f1c2f3a2196e2.

RasaHQ/rasa_nlu,RasaHQ/rasa_nlu,RasaHQ/rasa_nlu,RasaHQ/rasa_core,RasaHQ/rasa_core,RasaHQ/rasa_core