Refile fails within org-rifle

I use helm-rifle to search and then mark heading then press "C-c C-w" to refile then I get this error message:
```
funcall-interactively: Wrong number of arguments: #[(candidate) "\211\211\211A\242
rq\210b\210\305 -\207" [candidate input0 --dash-source-292-- buffer pos org-refile] 3 ("/home/epic/.emacs.d/elpa/develop/helm-org-rifle-20190809.1831/helm-org-rifle.elc" . 34399) nil], 0
```
I am running spacemacs develop. I also tested this on my coworkers emacs (also running spacemacs but with different config) with the same result.

This also happens if I mark one, mark several, mark none but have the cursor over one entry, all resulting in the same error message.

I would love to debug this myself, but I am not well versed in elisp debugging (or coding) - I have programmed lots of Java. python etc.. How do i set the debugger so that I can see what fails?