Completions for zsh are not working propperly.
I'm getting the following output on my zsh startup script related to the loading of the source <(volta completions zsh):
_arguments:comparguments:325: can only be called from completion function

Using volta@0.5.5 on MacOS Mojave with zsh@5.7.1 (x86_64-apple-darwin18.2.0)