Error: relative URL without a base

[DerDennisOP]

I'm trying to push to my attic store, but I'm just getting this error:

> attic use main
Configuring Nix to use "main" on "local":
+ Substituter: attic.wavelens.iomain
+ Trusted Public Key: main:***********************************
+ Access Token
Error: relative URL without a base
> attic watch-store main                                                     
Error: relative URL without a base

Any Ideas on how to fix?