“Entity must not be null for http method PUT.”  occurs as a result of this line…  https://github.com/jbosstm/narayana/blob/3a700cc6203d17e4a5fef74bcf81e3ec049240ec/[…]ent/src/main/java/io/narayana/lra/client/NarayanaLRAClient.java

Solution is to use to use `Entity.text(“”)` instead of `null` for the put.

The same issue occurred in LRARecord a while back and was fixed with the same solution in order to conform to spec.