"Invalid range" plugin error when opening fish file

[miki725]

when opening a fish file I get:

Error detected while processing /Users/miki725/.vim/plugged/vim-fish/ftplugin/fish.vim:
line   23:
E16: Invalid range: ----w

not sure how to debug this further. any ideas?

➜ nvim --version
NVIM v0.3.5
➜ vim --version
VIM - Vi IMproved 8.1 (2018 May 18, compiled May 20 2019 05:21:28)

[mindonly]

i get the same when i invoke funced to edit a function. i deleted vim-fish and re-cloned to no avail. if anyone out there knows what's up or can point me in the right direction, let me know.

[I] ➜ ~ vim --version
VIM - Vi IMproved 8.1 (2018 May 18, compiled Oct 28 2019 12:23:44)
Included patches: 1-2231