Tried many things - this is a bug at your end, because it should be very clearly in the documents, and it should come with its own env without problems or thinking about it.
Service bindings have env in my projects. Could you please share your code along with what you have tried so that we can see what you may be doing wrong?
I eventually managed to get it to work - turns out I needed to add a this.env (instead of env) to all of them (although this should be stated - there’s no transition guide for functions that work as fetch that I’m then converting into a Service Binding).